Mounting device for fasteners or items

Abstract

A mounting device for securing an item to a panel comprises a mounting bolt with a head and threaded shank, a fixing component with a threaded bore and at least one panel engagement wing, and a chassis coupled to the fixing component. The chassis includes a head portion that engages a first side of the panel and a body portion extending through a panel aperture. The fixing component pivots between an insertable condition for passage through the aperture and an engageable condition in which the wing engages the opposite side. An engagement formation, axially recessed relative to the head portion, receives and captures the bolt head within the chassis so the end face is flush with or recessed from the proximal end, thereby resisting further axial movement. A restraint mechanism opposes axial forces on the fixing component. A kit of parts and a mounting assembly are also provided.

Description

[0001] RPMA.2W0

[0002] MOUNTING DEVICE FOR FASTENERS OR ITEMS TECHNICAL FIELD

[0003] The present invention relates to a mounting device for mounting an item to a panel, and particularly but not exclusively to a mounting device for mounting an item to a plasterboard or drywall panel. Aspects of the invention relate to a mounting device, to a mounting assembly comprising a mounting device coupled to a panel and to a kit of parts for forming a mounting device.

[0004] BACKGROUND ART

[0005] The construction, home improvement, and do-it-yourself (DIY) industries frequently employ fastening systems to attach fixtures to various wall materials, including masonry and panels.

[0006] Traditional methods, such as self-tapping screws, face challenges when used with different substrates. In particular, fibrous or granular panel materials such as plasterboard (drywall) often lack sufficient structural strength to securely hold screws under load, leading to oversized holes and the subsequent need for specialized anchors to provide stability.

[0007] One commonly used mounting system includes metal or plastic anchors having a tubular body with external screw threading. These anchors are driven into the plasterboard and typically have an internal aperture to receive a screw for mounting an item. Although these systems can be suitable for lighter loads, they generally prove less effective for heavier items, risking significant panel damage and potential anchor failure.

[0008] Other designs employ expandable fasteners featuring pivoting arms or wings, wherein the arms are coupled to a threaded mounting bolt. These arms or wings move from a folded insertion state to a deployed state behind the panel, creating a grip that helps resist outward movement of the bolt. While such pivoting-arm devices often accommodate heavier loads, they present several disadvantages. They are mechanically more complex, incorporating multiple interconnected components such as pivot joints, central nuts, and specialized anchoring features. This complexity increases manufacturing costs and adds more points of potential failure. The pivot connections, in particular, bear the primary load once the device is installed. Under repetitive or heavy loads, the pivoting regions - where the arms connect to the central body - are subject to stress concentrations and material fatigue.

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[0010] RPMA.2W0

[0011] Moreover, the extreme stresses placed on these pivot points generally constrain the choice of materials - manufacturers must often use metal or specially formulated plastics capable of withstanding both dynamic pivoting forces and static loads. This requirement can limit design flexibility and drive-up manufacturing costs.

[0012] Additionally, because these systems cannot typically be pre-installed into the panel, they must be inserted and expanded at the exact point of use, complicating and slowing down installation -especially for large-scale or repetitive projects. They also often clamp items directly between the head of the mounting bolt and the front panel surface, limiting compatibility with items that have non-standard or offset attachment features.

[0013] GB2626191A discloses various embodiments in which a fixing component includes arms pivotally connected to a central nut or body with a threaded bore. However, these embodiments continue to rely on pivotal connections for the arms or wings, retaining many of the inherent challenges common to pivot-arm-based designs: reliance on load-bearing pivot joints and the complexity of maintaining specific opening and closing angles. The pivot regions, which facilitate the arms' movement, are among the most vulnerable points when subjected to load or repeated use; accordingly, manufacturers must carefully select higher-strength materials to meet these demands, thereby increasing cost and limiting design flexibility.

[0014] There is therefore a need for a simpler, more reliable mounting system that reduces or eliminates these vulnerable pivot joints and complex wing mechanisms, broadens the range of materials suitable for manufacturing, and still provides a secure mounting point - particularly for use in plasterboard or similarly lightweight panel materials.

[0015] SUMMARY OF THE INVENTION

[0016] According to a first aspect of the present invention, there is provided a mounting device configured to be coupled to a panel, comprising:

[0017] a mounting bolt comprising a head and a shank provided with external threading, the head of the mounting bolt including an end face having a mounting point configured to accept and retain a fastener;

[0018] a fixing component comprising a body having a threaded bore that is engageable with the

[0019]

[0020] RPMA.2W0

[0021] external threading of the shank of the mounting bolt, and at least one panel engagement wing rigidly connected to the body, the at least one panel engagement wing extending radially from the body;

[0022] a chassis configured to be coupled to the fixing component, the chassis comprising:

[0023] a) a head portion at a proximal end of the chassis, the head portion being configured to physically engage with the panel to resist passage of the head portion through a panel aperture when in use;

[0024] b) a chassis aperture extending through the head portion to receive the mounting bolt;

[0025] c) a body portion configured to receive the mounting bolt therethrough, the body portion extending from the head portion toward a distal end of the chassis, wherein the body portion is further configured to:

[0026] i. extend through the panel aperture when in use;

[0027] ii. enable the fixing component to pivot about a pivot axis relative to the chassis;

[0028] ill. enable axial movement of the fixing component along a chassis axis between the proximal end and the distal end; and

[0029] iv. restrict rotational movement of the fixing component relative to the chassis;

[0030] d) an engagement formation, which is arranged to engage the head of the mounting bolt in order to resist passage of the mounting bolt head through the chassis; and e) a restraint mechanism configured to oppose an external axial force applied to the fixing component toward the distal end;

[0031] wherein, when the fixing component is coupled to the chassis, it is pivotable between:

[0032] an insertable condition, in which the fixing component body is disposed at an angle such that the fixing component is entirely contained within a locus corresponding to the

[0033]

[0034] RPMA.2W0

[0035] periphery of the panel aperture, permitting insertion and removal of the fixing component from a first side of the panel; and

[0036] an engageable condition in which the fixing component body is oriented substantially perpendicular to the chassis axis, thereby positioning the at least one panel engagement wing radially beyond the periphery of the panel aperture so as to engage a second side of the panel as the fixing component is drawn toward the head portion.

[0037] The mounting device is designed to be securely mounted to a panel, such as a plasterboard panel, with the mounting bolt extending through an aperture in the panel. The chassis engages with both the panel and the head of the mounting bolt, preventing movement of the mounting bolt in the first direction, from the first side of the panel toward the second side. The at least one panel engagement wing of the fixing component engages with the second side of the panel, preventing the mounting bolt from moving in the opposite direction

[0038] Unlike devices featuring pivotably attached wings, the at least one panel engagement wing of the present invention may be integrally formed with, or otherwise rigidly connected to, the body so that no pivot or hinge exists between the wing and the body.

[0039] The head portion resists movement of the chassis through the panel beyond a predetermined point, referred to herein as "over-insertion" of the device, provided that the panel aperture is sized correctly. This may be achieved by configuring the head portion, in some embodiments, to physically abut an outer surface of the panel (i.e., the "first side" or "outside" of the panel, from which the device is inserted into the panel aperture). The head portion may be flared, include a flange, or incorporate a lip to provide this physical abutment. Alternatively, or in addition, one or more panel engagement features, such as fins (e.g., radially extending fins), may be provided to "bite into" the panel through its thickness, thereby preventing over-insertion. Where provided, such fins may also prevent rotation of the chassis within the panel aperture, as discussed in more detail in certain embodiments below.

[0040] In some embodiments, the head portion may further comprise a locating formation. This locating formation is configured to align and seat the chassis head within the panel aperture during installation. In certain embodiments, it is designed to engage with the inner surface of the panel aperture, ensuring alignment and proper placement of the mounting device.RPMA.2W0

[0041] In other embodiments, the locating formation may comprise a continuous structural feature, such as a circular tube, wall section, or similar element. Alternatively, the locating formation may include at least one discrete, non-continuous structural element, such as one or more tabs extending perpendicularly from the chassis aperture.

[0042] The engagement formation is configured to resist axial movement of the head of the mounting bolt through the chassis, limiting movement beyond a predetermined point. In some embodiments, the engagement formation may include a continuous internal or outer flange extending around the chassis aperture, designed to provide a contact surface that engages with the underside of the mounting bolt's head, effectively preventing further axial movement. This flange may also be incorporated into the head portion of the chassis, acting as the engagement feature that resists the passage of the chassis through the panel. Alternatively, the engagement formation may feature one or more discrete structural elements, such as ribs, tabs, projections, stops, lugs, or teeth. These features may extend radially inward or be positioned around the aperture to securely engage the underside of the mounting bolt's head, providing a firm resistance to axial displacement.

[0043] In some embodiments, the shank of the mounting bolt has a relatively small cross-section and extends axially from the head of the mounting bolt, with the head having a comparatively larger cross-section or comprising a flange. This configuration allows the shank to pass through the chassis and extend beyond the engagement formation, enabling it to engage with the fixing component. The larger cross-section or flange on the head of the mounting bolt engages with the engagement formation of the chassis, e.g. seating against the engagement formation, thereby achieving a predetermined positioning and effectively resisting further axial movement of the mounting bolt toward the distal end of the chassis. When the mounting bolt is screwed into the threaded bore of the fixing component, the fixing component is axially drawn toward the head portion, causing the panel engagement wing to securely abut the second side of the panel, thereby providing a firm and stable connection.

[0044] In some embodiments, the engagement formation may be recessed from the proximal end of the chassis toward the distal end, allowing the head of the mounting bolt to be at least partially recessed within the chassis. Thus the bolt head may be at least partially, and in certain embodiments entirely, received within the chassis. In some embodiments, the head of the mounting bolt, from its end face

[0045]

[0046] RPMA.2W0

[0047] to its underside, is configured to fit entirely within the chassis. Advantageously, the thickness of the bolt head may be substantially equal to or less than the length of the chassis from the engagement formation to the proximal end, ensuring that the head of the bolt remains substantially level with, or recessed relative to, the proximal end of the chassis when seated against the engagement formation. For clarity, the "proximal end" of the chassis refers to the end facing away from the distal tip of the bolt shank and the fixing component.

[0048] In some embodiments, the head of the bolt may be configured to be at least partially received within the chassis. In this case, at least a portion of the bolt head may be recessed into the panel on which the mounting device is installed. When fully seated within the chassis, the end face of the bolt head may be substantially level with, or recessed relative to, the proximal end of the chassis.

[0049] In some embodiments, the engagement formation may be integrated into the locating formation, such as an end wall with an aperture at its base. This design combines the alignment and engagement functions into a single structural feature. Alternatively, in configurations utilising tabs or ribs, the engagement formation may be formed by curving or incorporating an inwardly protruding section that engages with the head of the mounting bolt.

[0050] The Applicant has appreciated that it is particularly advantageous for the mounting device to have the engagement formation arranged to receive and capture the head of the mounting bolt within the chassis such that, when captured, the end face of the mounting bolt lies flush with or recessed below the proximal end of the head portion. Such an arrangement thereby resists axial movement beyond a predetermined point. Thus, when viewed from a second aspect, embodiments of the present invention provide a mounting device configured to be coupled to a panel, the mounting device comprising:

[0051] a mounting bolt comprising a head and a shank provided with external threading, the head of the mounting bolt including an end face having a mounting point configured to accept and retain a fastener;

[0052] a fixing component comprising a body having a threaded bore that is engageable with the external threading of the shank of the mounting bolt, and at least one panel engagement wing rigidly connected to the body, the at least one panel engagement

[0053]

[0054] RPMA.2W0

[0055] wing extending radially from the body;

[0056] a chassis configured to be coupled to the fixing component, the chassis comprising: a) a head portion at a proximal end of the chassis, the head portion being configured to physically engage with the panel to resist passage of the head portion through a panel aperture when in use;

[0057] b) a chassis aperture extending through the head portion to receive the mounting bolt;

[0058] c) a body portion configured to receive the mounting bolt therethrough, the body portion extending from the head portion toward a distal end of the chassis, wherein the body portion is further configured to:

[0059] i. extend through the panel aperture when in use;

[0060] ii. enable the fixing component to pivot about a pivot axis relative to the chassis;

[0061] ill. enable axial movement of the fixing component along a chassis axis between the proximal end and the distal end; and iv. restrict rotational movement of the fixing component relative to the chassis;

[0062] d) an engagement formation, which is arranged to engage the head of the mounting bolt in order to resist passage of the mounting bolt head through the chassis, wherein:

[0063] i. the engagement formation comprises at least one projection extending radially inward from a path corresponding to the periphery of the chassis aperture;

[0064] ii. the engagement formation is recessed relative to the chassis aperture; and

[0065] ill. the entire head of the mounting bolt is configured to be received

[0066]

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[0068] within the chassis aperture, and wherein the end face of the mounting bolt is substantially flush with or recessed relative to the proximal end of the chassis; and

[0069] e) a restraint mechanism configured to oppose an external axial force applied to the fixing component toward the distal end;

[0070] wherein, when the fixing component is coupled to the chassis, it is pivotable between:

[0071] an insertable condition, in which the fixing component body is disposed at an angle such that the fixing component is entirely contained within a locus corresponding to the periphery of the panel aperture, permitting insertion and removal of the fixing component from a first side of the panel; and

[0072] an engageable condition in which the fixing component body is oriented substantially perpendicular to the chassis axis, thereby positioning the at least one panel engagement wing radially beyond the periphery of the panel aperture so as to engage a second side of the panel as the fixing component is drawn toward the head portion.

[0073] The Applicant has appreciated that embodiments of the second aspect of the invention are particularly advantageous for providing a mounting point that is flush with a panel. The combination of the chassis geometry which avoids any pivot or hinge between the wing and the body, together with the flush fit of the mounting bolt accommodated by the engagement formation of that chassis, provides for a particularly robust device that, from the front of the panel, simply provides a neat mounting point for accepting a fastener. The device may be of a particularly compact and relatively stiff construction such that when weight is applied to a fastener inserted into the mounting bolt, unwanted torsional forces may be avoided. This construction restricts the ability of the portion of the device behind the panel from wobbling, thus making the device easier to use.

[0074] Optional features set out in respect of the first aspect of the invention are also applicable to the second aspect of the invention and vice versa, as appropriate. For the avoidance of doubt, the optional features described hereinabove in respect of the first aspect of the invention apply to the second aspect of the invention; and, similarly, the optional features set out below apply to both the first and second aspects of the invention.

[0075]

[0076] RPMA.2W0

[0077] The engagement formation is arranged to receive and capture the head of the mounting bolt within the chassis, thereby resisting axial movement beyond a predetermined point. The engagement formation is positioned inward of a path corresponding to a periphery of the chassis aperture and is axially recessed relative to the head portion. It comprises at least one inward projection and is configured such that, when the head is captured, the end face of the mounting bolt lies flush with or recessed below the proximal end of the head portion. In some embodiments, the inward projection is a continuous internal flange extending around the aperture; in other embodiments it comprises one or more discrete elements (e.g. ribs, tabs, projections, stops, lugs, or teeth) positioned around the aperture and extending inward to engage the underside of the bolt head and effect the capture. In certain embodiments, the underside of the mounting bolt's head is chamfered or inclined to cooperate with the engagement formation.

[0078] Thus, it will be appreciated by those skilled in the art that the embodiments of the foregoing aspects of the invention provide a user-friendly wall mounting device, or "anchor," featuring a fixing component where the engagement wings and body form a rigid structure. The device is designed for pre-installation, enabling a secure and stable mounting point to be established within the panel. This pre-installation capability allows for the subsequent attachment of fasteners and items without the need for additional anchoring steps or adjustments, making it ideal for streamlined, repeatable installations. The rigid construction of the fixing component ensures robustness, providing secure installation, mechanical simplicity, and ease of assembly. By eliminating the need for securing the item or fastener at the same point as installation, the mounting device offers a convenient solution capable of securing various fasteners - including but not limited to bolts, machine screws, selftapping screws, nails, hooks, nuts, eye bolts, bolt hooks, nut, or other similar hardware - into a secure mounting point. Importantly, the mounting system does not require the fastener or the item being mounted to abut the panel around the aperture, nor does it need the mounted item to directly contact the panel. Additionally, the fastener is not necessary to draw the fixing component into engagement with the wall, as the mounting bolt itself serves this function. However, in situations where the mounting bolt is recessed, it can provide additional securing, further enhancing the stability of the mounted item, and ensuring a substantially secured structure.

[0079] The panel may be an outer panel of a hollow wall and could, for example, be a plasterboard panel. However, the fastening anchor of the present invention may also be used to mount items to other

[0080]

[0081] RPMA.2W0

[0082] types of walls and panels, particularly panels with comparatively low thickness, such as wooden panels. Moreover, the device need not necessarily be installed in a vertical orientation, offering versatility for a variety of applications.

[0083] The chassis may also comprise additional features to prevent rotational movement of the chassis relative to the panel during or after installation. In some embodiments, the head portion includes one or more radially extending fins configured to engage with the panel during use, thereby restricting rotational movement of the chassis. These fins may cut through the panel from the first side to the second side, effectively "biting" into the panel through its entire thickness. By doing so, the fins provide additional grip, preventing the chassis from rotating within the panel aperture. This feature is particularly beneficial when screwing the mounting bolt, such as a bolt, into the fixing component. Additionally, as previously outlined, such fins may also prevent over-insertion of the device through the panel aperture. This configuration may allow the device to sit flush with the panel, avoiding the head portion protruding beyond the panel surface when in use.

[0084] The fixing component includes at least one panel engagement wing, with a preferred embodiment featuring two wings positioned opposite each other. In this embodiment, the wings may be symmetrical, extending radially from the body of the fixing component, or asymmetrical, with one wing being longer than the other. In the insertable condition, the longer wing is typically aligned for first insertion into the panel aperture. Additionally, the wings may extend at an angle relative to the body of the fixing component. Conveniently, in some embodiments, the fixing component, including both the body and the wings, may be integrally formed as a single piece, which not only simplifies manufacturing but also enhances rigidity and strength, allowing for a wider range of material choices.

[0085] In some embodiments, the body portion comprises at least one channel extending axially along an axis parallel to the axis between the proximal end and the distal end. Each channel is configured to engage with a respective protrusion extending radially from the body of the fixing component. When in use, the engagement between the channel and the protrusion:

[0086] • Enables pivoting of the fixing component between an insertable condition, where it aligns substantially with the chassis axis, and an engageable condition, where it pivots to a position substantially perpendicular to the chassis axis;

[0087]

[0088] RPMA.2W0

[0089] Allows axial movement of the fixing component along the axis between the proximal and distal ends; and

[0090] • Restricts rotational movement of the fixing component relative to the head portion.

[0091] These protrusions may be at least partially cylindrical, extending from the body of the fixing component, and function as the pivot points around which the fixing component pivots, as outlined in the claims. The interaction between these protrusions and the channels in the body of the chassis enables the fixing component to pivot while restricting rotational movement relative to the head portion.

[0092] In a particular set of embodiments, the body portion comprises a plurality of posts connecting the head portion to the end feature, wherein the at least one channel is defined between said posts. In some embodiments, the chassis and the fixing component are formed as a single, integral piece. The body portion of the chassis is connected to the fixing component by at least one resiliently deformable pivot region, which enables pivoting movement of the fixing component relative to the chassis by the deformation of the resiliently deformable pivot region. Additionally, the body portion may include at least one resiliently deformable strip, allowing axial movement of the fixing component towards the head of the chassis as the body portion deforms. This design ensures that both pivotal and axial movement are facilitated by the deformation of the resiliently deformable elements, while maintaining structural rigidity to prevent rotational movement.

[0093] The fixing component may include one or more pivot limiting mechanisms, located on the body, panel engagement wing, or pivot protrusion, to control its pivoting motion. The pivot limiting mechanism may be configured so that the fixing component pivots within a controlled range that encompasses both the insertable condition and the engageable condition. The pivot protrusion, in some embodiments, may have a rounded section for smooth movement and a flat section that engages with the inner surfaces of the chassis channel to limit pivoting beyond a specific angle. In some embodiments, one or two pivot limiting protrusions, positioned at the upper and / or lower parts of the fixing component, interact with the chassis to further restrict excessive pivoting.

[0094] The Applicant has identified various restraint mechanisms designed to oppose external axial forces applied to the fixing component toward the distal end. These mechanisms may include

[0095]

[0096] RPMA.2W0

[0097] configurations that provide a bias force directed toward the proximal end, as well as mechanical interactions that physically block or restrict axial movement of the fixing component toward the distal end, either partially or fully.

[0098] In some embodiments, the channels capturing the pivot may be closed at the distal end.

[0099] Alternatively, the connections between the fixing component and the chassis may act as a tether, effectively limiting or guiding the movement of the fixing component. These tethered connections help prevent the fixing component from moving beyond the desired range of motion, ensuring controlled pivoting and axial movement.

[0100] In some embodiments, the mounting point is configured to receive and securely retain a variety of fasteners including but not limited to: bolts, machine screws, self-tapping screws, nails, hooks, eyebolts, nuts, or similar components. This versatile design allows the mounting device to accommodate various attachment needs. The fixing component is also interchangeable based on the specific application, providing flexibility to suit different installation requirements.

[0101] Alternatively, the mounting point can include a deformable core configured to securely receive and retain fasteners such as self-tapping screws or nails, even when driven at various angles. The deformable core may be formed from a solid block of natural or reconstituted wood, plastics, or other deformable materials (optionally reinforced with fibres) that permit a fastener to bite firmly. In another possible configuration, the mounting point comprises a protruding mounting portion extending from the end face of the mounting bolt. This protruding portion may be externally threaded, so that a complementary fastener (for instance, a nut) can be threaded onto it, securing an item to the panel.

[0102] In yet another example, the mounting point may be implemented as a keyhole slot formed in the mounting bolt. The slot includes a larger circular entry section to allow a screw or pin head to pass through, and a narrower channel that captures the shank of the fastener, preventing its head from slipping back. During installation, the user partially drives the fastener (e.g., a screw) into a fixture or item so that it protrudes sufficiently. The mounting bolt is positioned to align the fastener head with the keyhole's circular entry section, then slid laterally to seat the fastener's shank in the narrower channel, thereby forming a secure fixing.

[0103]

[0104] RPMA.2W0

[0105] The invention is not limited to these specific forms, and other suitable configurations or material choices may be employed as appropriate. In any of these embodiments, the mounting point may extend along the longitudinal axis of the mounting bolt, passing through the head and optionally part of the shank. In some cases, it can extend the entire length of the bolt-from the end face of the head to the distal tip of the shank-depending on the overall design requirements and intended application.

[0106] The head of the mounting bolt may be configured to engage with a tool, such as a wrench, spanner, socket, or screwdriver, to facilitate rotation during installation. For example, the head may have a hexagonal or other polygonal shape, or a socket in its end face to receive a correspondingly shaped key.

[0107] Alternatively, or in addition, the head may be equipped with a handle that pivots between a stowage position and a deployed position. This handle extends outwardly beyond the end face of the head, allowing it to be gripped either by a user's fingers or a tool such as pliers, facilitating rotation of the mounting bolt. When in the stowage position, the handle may sit flush with or recessed below the proximal end of the head portion.

[0108] The handle may pivot about an axis perpendicular to the longitudinal axis of the mounting bolt. In the stowage position, the handle extends perpendicular to the mounting bolt's axis, while in the deployed position, it extends substantially parallel to the axis, optionally it extends parallel to the axis.

[0109] The handle may be connected to the head of the mounting bolt at first and second attachment points, each located on opposite sides of the head. These attachment points may comprise a pair of bosses on the handle, which are received within corresponding recesses on the head of the mounting bolt.

[0110] It will be understood that the mounting device may be supplied with a range of interchangeable mounting bolts, as described above, and such variations will still fall within the scope of the present invention.

[0111] The chassis, the fixing component and / or the mounting bolt may, in some embodiments, be formed from a metal material (e.g. steel, stainless steel, or brass). The chassis, the fixing component and / or

[0112]

[0113] RPMA.2W0

[0114] the mounting bolt may, in some potentially overlapping embodiments, be formed from a plastics material (e.g. nylon, polylactic acid (PLA), polyethylene terephthalate (PET), or acrylonitrile butadiene styrene (ABS)). These components to be manufactured through conventional manufacturing processes or innovative 3D printing technologies.

[0115] A variety of fasteners may be used with embodiments of the present invention. The fastener may have a threaded shank that engages with a corresponding threaded bore in the fixing component, in a manner known in the art per se. In some embodiments, the fastener may include a standard bolt, machine screw, hook, eyehook, self-tapping screw, or any other suitable type of fastener, known in the art per se. Additionally, the fastener may comprise a body that attaches to a protruding portion of the mounting point, in a manner known in the art per se. In some embodiments, the fastener may include a nut with a threaded bore or any other suitable type of fastener known in the art per se. The threaded shank of the mounting bolt may comprise substantially the entire axial length of the mounting bolt from the distal end to the proximal end, or the thread may extend from the distal end only partially up the axial length of the mounting bolt

[0116] According to a third aspect of the invention, there is provided a mounting assembly comprising a mounting device as described above, coupled to a panel. The mounting bolt extends through an aperture in the panel, with the head portion of the chassis engaging the first side of the panel to resist movement of the mounting device through the aperture. The engagement formation of the chassis engages with the head of the mounting bolt to resist its movement in a first direction, from the first side of the panel toward the second side. The at least one panel engagement wing of the fixing component engages the second side of the panel, resisting movement of the mounting bolt in a second direction, opposite to the first direction.

[0117] The engagement formation of the chassis may, at least in some embodiments of the third aspect of the invention, be arranged to receive and capture the head of the mounting bolt within the chassis, thereby resisting its movement in a first direction, from the first side of the panel toward the second side. When captured, the end face of the mounting bolt may lie flush with or recessed below the proximal end of the head portion.

[0118] The engagement formation thereby resists axial movement of the mounting bolt through the chassis beyond a predetermined point. This ensures that, when the mounting bolt is tightened into the

[0119]

[0120] RPMA.2W0

[0121] threaded bore of the fixing component, the fixing component is drawn axially toward the head portion of the chassis. This axial movement causes the at least one panel engagement wing of the fixing component to securely abut the second side of the panel, establishing a stable and secure connection between the mounting assembly and the panel.

[0122] The panel may be an outer panel of a hollow wall. The panel may, for example, be a plasterboard panel. However, the mounting device of the present invention may also be used to mount items to other types of walls and panels, particularly panels having a comparatively low thickness, including, for example, wooden panels.

[0123] The end face of the head of the mounting bolt may be at least substantially level with or inwardly recessed with respect to the first side of the panel.

[0124] According to a fourth aspect of the present invention, there is provided a kit of parts for forming a mounting device configured to be coupled to a panel. The kit comprises:

[0125] • A mounting bolt, as described above, which includes a head and shank provided with external threading, capable of engaging with various fasteners such as nuts, bolts, or machine screws.

[0126] • A fixing component, as described above, with a threaded bore configured to engage with the external threading of the mounting bolt and at least one panel engagement wing extending radially to securely engage the panel.

[0127] • A chassis, as described above, configured to be coupled to the fixing component. The chassis comprises a head portion designed to engage with the panel and prevent over-insertion. It also allows axial and pivotal movement of the fixing component while restricting rotational movement.

[0128] In some embodiments the kit of parts may comprise compatible fastener or range of fasteners, as described above, including nuts, self-tapping screws, hooks, bolt hooks or nails, which can be used with the mounting point to secure the device to the panel.

[0129] Additional components, such as a tension spring or flexible strip, as described above, configured to bias the fixing component toward the proximal end of the chassis and facilitate axial movement and

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[0132] pivoting.

[0133] The kit may be supplied with a range of interchangeable mounting bolts, each with different gauges, diameters, or fastener heads, to accommodate various panel thicknesses and installation requirements. The chassis and fixing component may be supplied separately, allowing them to be used with existing mounting bolts or fasteners for specific applications.

[0134] The kit may also comprise at least one engagement formation on the chassis, configured to resist movement of the chassis through the panel aperture. This engagement formation may include a flange extending radially outwardly from the head portion or one or more longitudinally extending fins that bite into the panel to prevent over-insertion and resist rotational movement.

[0135] As described previously, in at least some embodiments of the fourth aspect of the invention, the engagement formation of the chassis may be arranged to receive and capture the head of the mounting bolt within the chassis, thereby resisting its movement in a first direction, from the first side of the panel toward the second side. When captured, the end face of the mounting bolt may lie flush with or recessed below the proximal end of the head portion.

[0136] It will be appreciated that the components of the kit, such as the mounting bolt, fixing component, and chassis, may also be supplied separately and used in combination with existing panel systems or mounting devices. However, it will be understood that the fixing component and chassis may be supplied separately and used in combination with a mounting bolt having an applicable mounting point.

[0137] Optional features set out in respect of any aspect of the invention are also applicable to the other aspects of the invention as appropriate.

[0138] In the context of this specification "comprising" is to be interpreted as "including". Approximately as employed herein is defined as ± 10%.

[0139] Aspects of the invention comprising certain elements are also intended to extend to alternative embodiments "consisting" or "consisting essentially" of the relevant elements.

[0140] The term "couple" (and by extension derivatives such as "coupling", "coupled", etc.) should be understood to include both: direct connections; and indirect connections via one or more

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[0142] RPMA.2W0

[0143] intervening components. Components are considered, at least for the purposes of the present invention, to be coupled to one another if their connection (whether direct or indirect mechanically) yields the relevant function. Any references to "couple" (or equivalent derivative such as "coupling", "coupled", "couplable", and such like) may be limited to "connect" (or corresponding derivative such as "connection", "connected", "connectable", and such like), and may be further limited to "directly" or "indirectly" connect.

[0144] The term "restrict" and its derivatives as used herein means to inhibit at least partially and potentially completely, depending on the technical context.

[0145] The term "proximal end" and its derivatives as used herein means at the end of the mounting device that is closest to the first side of the panel when the device is installed. Conversely, the term "distal end" and its derivatives as used herein means at the end of the mounting device that is furthest from the first side of the panel when the device is installed.

[0146] The term "axial" and its derivatives as used herein mean along the direction of the major axis of the chassis. When the mounting device is installed in a flat panel, this axis will typically be perpendicular (i.e. normal) to the panel itself.

[0147] The term "radial" and its derivatives as used herein mean along the direction radiating or converging on a common centre. As used typically herein, this common centre is the major axis of the chassis. The term "lateral" and its derivatives as used herein mean along directions in a plane normal to the major axis and parallel to the panel when in use. In general, when the mounting device is installed in a substantially vertical panel (e.g. a wall) and being viewed face on, lateral motions are those along the directions that would be seen as upward, downward, leftward, and rightward relative to the panel (rather than into or out of the panel, which are axial), i.e. in a plane parallel to the wall. In a substantially horizontal panel (e.g. a ceiling), the lateral directions would be the directions in a plane parallel to the ceiling.

[0148] References to components being configured to be able to achieve a particular function, for example in respect of the chassis absent the fixing component and / or mounting bolt, should be understood to mean that the function is present when the mounting device is assembled and / or in use as appropriate.

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[0150] RPMA.2W0

[0151] Where technically appropriate, embodiments of the invention may be combined.

[0152] Embodiments are described herein as comprising certain features / elements. The disclosure also extends to separate embodiments consisting or consisting essentially of said features / elements. Technical references such as patents and applications are incorporated herein by reference.

[0153] Any embodiments specifically and explicitly recited herein may form the basis of a disclaimer either alone or in combination with one or more further embodiments

[0154] BRIEF DESCRIPTION OF THE DRAWINGS

[0155] Certain embodiments of the present invention will now be described with reference to the accompanying drawings, in which:

[0156] Figure 1 is an exploded perspective view of a mounting device, showing its three principal components-namely a mounting bolt, a fixing component with at least one panel engagement wing, and a chassis.

[0157] Figure 2 is an assembled perspective view of the mounting device, illustrating how the mounting bolt, fixing component, and chassis couple together.

[0158] Figures 3 and 4 are side elevational views of the assembled mounting device, highlighting the threaded engagement between the mounting bolt and the fixing component, as well as how the fixing component can move axially relative to the chassis.

[0159] Figures 5 and 6 are perspective views of the fixing component in isolation, shown pivoted to different orientations: an "engageable" condition (substantially perpendicular to the chassis axis) and an "insertable" condition (aligned so it can pass through the panel aperture).

[0160] Figure 7 is a perspective view of the mounting device installed in a panel (e.g., plasterboard), and Figure 8 is a cross-sectional view taken through the panel and the installed mounting device. These views show how the chassis engages one side of the panel and the fixing component's engagement wings bear against the opposite side.

[0161] Figures 9 and 10 show the fixing component in its "insertable" condition, Figure 9 is a perspective view; Figure 10 is a rear elevational view, both illustrating how the fixing component

[0162]

[0163] RPMA.2W0

[0164] remains fully contained within the periphery of the panel aperture for insertion.

[0165] Figures 11 to 16 comprise a series of perspective and partially cross-sectional views illustrating a step-by-step installation sequence of the mounting device-from inserting the fixing component through the panel aperture, to tightening the mounting bolt and fully securing, for example, a hook bolt on the panel.

[0166] Figures 17 to 20b illustrate perspective, side, and cross-sectional views of alternative chassis embodiments. These figures show different engagement formations (such as recessed features, projecting tabs, and radially extending fins) that locate the chassis within the panel aperture, prevent over-insertion, and / or provide anti-rotation functionality.

[0167] Figures 21 to 24 are perspective and partially cross-sectional views of a one-piece design in which the fixing component and chassis are integrally formed, connected by resiliently deformable pivot regions or strips that allow the fixing component to pivot while restricting undesired rotation.

[0168] Figures 25 to 27 are perspective views of different mounting-bolt configurations, including a mounting bolt with a pivoting handle for finger-tightening, a bolt having a protruding threaded portion for nut attachment, and a bolt featuring a keyhole slot for receiving a complementary fastener.

[0169] Figures 28a and 28b show perspective and cross-sectional views of the mounting device used with a self-tapping screw for attaching an additional element (e.g., another panel or block) to a main panel. The mounting bolt in this embodiment has a deformable core suitable for receiving selftapping screws.

[0170] Figures 28c and 28d similarly show perspective and cross-sectional views of the device in use with a protruding bolt portion and a nut, allowing an additional element to be fastened securely.

[0171] Figures 29 to 32 include perspective and partial cross-sectional views of a fixing component featuring pivot protrusions with flat sections or separate pivot-limiting protrusions, thereby defining the allowed pivot range between insertable and engageable positions.

[0172] Figures 33 to 35 are perspective or partially cross-sectional views illustrating a further fixingcomponent embodiment with a pivot-limiting element near a panel engagement wing to prevent

[0173]

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[0175] excessive pivoting behind the panel.

[0176] Figures 36 and 37 are perspective views of a fixing component having two symmetrical panel engagement wings, each angled relative to the fixing-component body. This demonstrates how differently oriented or shaped wings can be employed to enhance engagement on the rear side of the panel.

[0177] It will be appreciated by those skilled in the art that the particular embodiments and figures are illustrative examples. Variations and modifications may be made without departing from the scope of the invention as defined in the accompanying claims.

[0178] DETAILED DESCRIPTION

[0179] Described in detail below are several embodiments of the present invention. It will be appreciated that the specific embodiments shown are exemplary. It will also be appreciated that the various individual features of the different embodiments may be combined with one another in any suitable manner, unless technical context dictates otherwise.

[0180] Figures 1 to 4 schematically illustrate a mounting device (1) for mounting an item such as a bolt hook to a plasterboard panel. The mounting device (1) is shown in perspective views in Figures 1 and 2 and from the side in Figures 3 and 4.

[0181] Figure 1 provides an exploded perspective view of the mounting device (1), illustrating its three main components: the mounting bolt (10), the fixing component (20), and the chassis (30), shown in an unassembled state.

[0182] As shown in Figure 2, the mounting device (1) comprises a mounting bolt (10), a fixing component (20), and a chassis (30) that are coupled together to form the mounting device (1).

[0183] The mounting bolt (10) includes a head (11) with an outer end face (12), an annular flange (19), and an underside (13) - formed on the annular flange and opposite the end face (12). An elongate shank (14) extends outwardly from the underside (13) of the head (11).

[0184] The shank (14) of the mounting bolt (10) is a straight, cylindrical bar with a round cross-section, extending along a longitudinal axis A. A proximal portion of the shank (14), near the head (11), remains unthreaded, while the rest carries external threading (15) that runs to the distal tip (14a)-

[0185]

[0186] RPMA.2W0

[0187] the end farthest from the head (11).

[0188] The shank (14) of the mounting bolt (10) has a diameter of 8 mm or 5 / 16 inches, and the external threading (15) is standard M8 or 5 / 16 threading of the type used to engage standard nuts and threaded recesses. It will of course be appreciated by those skilled in the art the mounting bolt and fixing component other diameters and types of threading may be used in other embodiments. The head (11) of the mounting bolt (10) has a hexagonal shape (16) when viewed in a direction aligned with the longitudinal axis A of the mounting bolt (10). However, the head (11) of the mounting bolt (10) also includes an annular flange (19) that extends radially outwardly from the underside (13) of the head (11), such that the head of the mounting bolt (10) is wider at its underside (13) than at its outer end face (12).

[0189] The mounting bolt (10) further comprises a mounting point in the form of a bore (18) with internal threading, extending from the end face (12) of the head (11) to the distal tip (14a) of the shank (14), where it exits at (18a). This bore (18) is configured to receive and retain a smaller-diameter threaded fastener than the mounting bolt (10) itself, as discussed in greater detail below.

[0190] The fastener in this embodiment may be any suitable threaded component compatible with the mounting point- namely the threaded bore (18) of the mounting bolt (10) - such as a bolt, hook, machined screw, or eyehook. The threading on the mounting bolt's shank typically matches that of the bore (e.g., M4 with a shank diameter of approximately 4 mm). However, the mounting bolt (10) can be interchanged to provide different bore diameters, depending on application requirements. The fixing component (20) comprises a body (21) and two asymmetrical panel engagement wings (22a, 22b), integrally formed so that no pivot or hinge exists between each wing and the body. In this example, the upper wing (22a) is longer than the lower wing (22b). Pivot protrusions (23) extend laterally from the body (21) to interact with the chassis (30). The fixing component (20) also features a threaded bore (24) configured to engage the external threading (15) of the mounting bolt (10). The chassis (30) includes a head portion (35) and a body portion (37). The head portion (35) contains a chassis aperture (32) for accommodating the shank (14) of the mounting bolt (10). The head portion (35) further comprises a recessed engagement formation, formed as an end wall (33) of the outer wall (31), with an engagement formation aperture (34) at its centre. The head portion (35) also

[0191]

[0192] RPMA.2W0

[0193] comprises an annular flange portion (36) extending radially outward, providing a broader base to engage with the panel and resist passage of the chassis through a panel aperture beyond a predetermined depth. Rotational prevention fins (41) are configured on the underside of the annular flange portion (36), designed to engage the panel aperture and prevent undesired rotation of the chassis (30) relative to the panel during installation.

[0194] The body portion (37) extends from the head portion (35) and features two pairs of posts (38) forming two axial channels (40). Each pair of posts (38) is connected by curved sections (39) at the distal end of the chassis (30), forming a closed section that terminates each axial channel (40). These curved sections (39) function as a restraint mechanism, engaging with the pivot protrusions (23) of the fixing component (20) to limit axial movement beyond them.

[0195] In Figure 2, the mounting bolt (10) is received within the chassis (30), with its shank (14) extending through the chassis aperture (32). The external threading (15) of the shank (14) engages the threaded bore (24) of the fixing component (20), while the pivot protrusions (23) of the fixing component (20) seat in the axial channels (40). In this configuration, the fixing component (20) is captured between the two pairs of posts, keeping it operatively associated with the chassis (30). This arrangement allows axial movement while preventing disengagement and unwanted rotation. The underside (13) of the mounting bolt head (11) engages an engagement formation formed by the end wall (33) and the engagement formation aperture (34) of the chassis (30). This contact ensures that the mounting bolt (10) is properly positioned and restricts its axial movement, so that when the mounting bolt (10) is tightened, the fixing component (20) is drawn axially along the shank (14). As shown in Figure 3, the fixing component (20) initially occupies a distal position relative to the head portion (35) of the chassis (30). Once the mounting bolt (10) is tightened, the fixing component (20) moves axially toward the head portion (35), as depicted in Figure 4. In Figure 2, the fixing component (20) is already in its engageable condition, with the upper (22a) and lower (22b) panel engagement wings extending radially from the body (21) at approximately a right angle to the chassis axis (30). The pivot protrusions (23) reside within the axial channels (40), allowing the fixing component (20) to travel along the path defined by these channels-moving from a distal position (Figure 3) toward the head of the chassis (Figure 4).

[0196] In the illustrated embodiment, the distance between the chassis' engagement formation and the

[0197]

[0198] RPMA.2W0

[0199] outer surface of the annular flange portion (36)-which defines the proximal end face of the chassis-exceeds the thickness of the mounting bolt's head (11) measured from its end face (12) to its underside (13). Consequently, the entire head (11) fits within the chassis (30), leaving its end face (12) recessed relative to the chassis' proximal outer surface. In alternative embodiments, the dimensions of either the head (11) or the engagement formation may be configured so that the head's end face (12) aligns flush with the chassis' proximal end.

[0200] When the mounting bolt (10) is not engaged, the fixing component (20) can pivot about the pivot protrusions (23), which reside within the axial channels (40). The curved sections (39) at the distal ends of these channels limit axial travel-preventing the fixing component (20) from disengaging the chassis (30) and ensuring proper support for the mounting bolt's engagement into the fixing component (20). This pivoting allows the fixing component (20) to transition between an engageable condition, with its body (21) substantially perpendicular to the chassis axis (see Figure 5), and an insertable condition, where the body (21) is more closely aligned with the chassis axis (see Figure 6). The mounting bolt (10), fixing component (20) and chassis (30) may each be formed of a metal such as steel, stainless steel or brass, or of a plastics material such as nylon, polylactic acid, polyethylene terephthalate or acrylonitrile butadiene styrene. The mounting bolt 10, fixing component (20) and chassis 30 may optionally be formed by 3D printing.

[0201] Figures 7 and 8 illustrate the mounting device (1) installed in a panel assembly, comprising a panel (50) with a first side (52) and a second side (53), and a panel aperture (51) through which the mounting device (1) is secured.

[0202] In Figure 7, the perspective view shows the mounting device (1) installed in the panel (50). The head (11) of the mounting bolt (10) is recessed within the head portion (35) of the chassis (30), with the annular flange (36) engaging the first side (52) of the panel to resist over-insertion. The recessed cylindrical wall (31) of the chassis (30) is aligned with the panel aperture (51), ensuring the mounting device (1) is properly positioned within the panel assembly (50). The shank (14) of the mounting bolt (10) extends through the panel assembly (50), providing a secure attachment point for additional fasteners or components.

[0203] In Figure 8, a cross-sectional view along line B in Figure 7 provides a detailed illustration of the mounting device (1) installed in the panel assembly (50). The head (11) of the mounting bolt (10) isRPMA.2W0

[0204] seated within the head portion (35) of the chassis (30), with the underside (13) of the bolt head (11) contacting an engagement formation created by the end wall (33) and engagement formation aperture (34). This contact restricts axial movement of the mounting bolt (10), so that when it is tightened, the fixing component (20) is drawn axially toward the head portion (35), as described earlier.

[0205] The fixing component (20), which includes the upper (22a) and lower (22b) panel engagement wings, is shown extending radially beyond the panel aperture (51) on the second side (53) of the panel, securely engaging the panel assembly (50). The panel engagement wings (22a, 22b) prevent the mounting device (1) from being withdrawn in the opposite direction, thereby ensuring a stable and secure connection.

[0206] These figures demonstrate how the mounting device (1) is installed within a panel assembly (50), with all components working together to provide a secure, aligned, and robust mounting solution for subsequent fastening and load-bearing applications.

[0207] In Figure 9 (perspective view) and Figure 10 (rear elevation view), the fixing component (20) -enclosed by the chassis (30) - is shown in the insertable condition, ready for insertion into the panel aperture (51) of a panel (50). In this state, the fixing component body (21) and panel engagement wings (22a, 22b) lie fully within the periphery (54) of the aperture (51), permitting the entire assembly to be inserted smoothly into the panel aperture.

[0208] In this embodiment, the panel engagement wings (22a, 22b) are aligned along the same axis as the body (21) of the fixing component (20). However, in other embodiments, the wings may be oriented at different angles relative to the body, provided the fixing component (20) still fits entirely within the periphery (54) of the panel aperture (51). Additionally, although the body (21) appears substantially horizontal here, precise horizontal alignment is not required; it is enough that the fixing component (20) can be positioned to fit within the periphery (54) during insertion.

[0209] The installation and use of the mounting device (1) shown in Figure 2 to secure an item-in this case a hook bolt (60)-to a plasterboard panel (50) will now be described with reference to Figures 11 to 16. The plasterboard panel (50), hereafter referred to as "the panel," has a first side (52) and an opposing second side (53), as shown in Figures 11 to 16. The first side (52) is visible and exposed,

[0210]

[0211] RPMA.2W0

[0212] while the second side (53) is concealed.

[0213] First, the user identifies the desired location on the first side (52) of the panel (50) for securing the hook bolt (60). An aperture (51) is drilled through the thickness of the panel (50) at this location. The diameter of the aperture (51) is chosen to match approximately the outer diameter of the recessed cylindrical wall (31) of the chassis (30).

[0214] Next, the mounting device (1) is prepared for insertion into the aperture (51). As shown in Figure 11, the fixing component (20) is pivoted into its insertable condition, aligning the panel engagement wings (22a, 22b) with the longitudinal axis of the fixing component body (21), fully contained within the aperture's periphery (51). In this condition, the fixing component (20) is dimensioned to pass through the aperture (51).

[0215] The mounting device (1) is then inserted into the panel (50) by positioning the fixing component (20) so that the panel engagement wings (22a, 22b) pass through the aperture (51). As shown in Figure 12, the chassis (30) remains aligned with the aperture (51), and the annular flange (36) on the head portion (35) of the chassis contacts the first side (52) of the panel, preventing over-insertion. Once the lower panel engagement wing (22b) has passed fully through the aperture (51), the fixing component (20) can pivot from its insertable condition into its engageable condition.

[0216] In Figure 13, the fixing component (20) is shown in its engageable condition, with its panel engagement wings (22a, 22b) extending radially beyond the aperture (51) to engage the second side (53) of the panel, while its body (21) is constrained by pivot protrusions (23) within the axial channels (40) formed by the posts (38) of the chassis-and, at this stage, the mounting bolt (10) has been threaded through the chassis aperture (32) into the component's threaded bore (24), with the end feature (39) supporting the bolt's engagement, thereby fixing the component (20) in the engageable condition.

[0217] As illustrated in Figure 14, a socket wrench or similar tool is used to tighten the mounting bolt (10) by engaging its hexagonal head (11). Rotating the bolt (10) draws the fixing component (20) axially along the shank (14) toward the chassis head portion (35), which is restrained against the panel's first side (52). Meanwhile, the underside (13) of the bolt head (11) presses against the chassis' engagement formation-formed by the end wall (33) - thereby restricting further axial travel of the bolt through the chassis. As tightening continues, the fixing component (20) travels along the bolt's

[0218]

[0219] RPMA.2W0

[0220] shank and is forced into contact with the panel's second side (53), effectively "sandwiching" the panel between the chassis head (35) and the fixing component (20), thus securing the mounting device (1) in place and providing a mounting point for a fastener.

[0221] In Figure 15, a hook bolt (60) is shown as the fastener to be used with the mounting device (1). The hook bolt (60) consists of a curved hook (61), a threaded body (63), and a retainer nut (62).

[0222] Finally, Figure 16 depicts the mounting device (1) in its fully installed configuration. The panel engagement wings (22a, 22b) of the fixing component (20) firmly engage the panel's second side (53), while the annular flange (36) of the chassis (30) engages the first side (52). In this example, the hook bolt (60) is tightly secured yet does not contact the panel surface; nevertheless, it provides a stable and robust attachment point for hanging or securing items. This configuration showcases the mounting device's utility and versatility as a secure, load-bearing solution.

[0223] This installation method creates a robust and stable attachment for the hook bolt (60), suitable for supporting loads-such as a light fixture or other items-from a plasterboard panel. Once installed, the hook bolt (60) offers a reliable anchoring point for suspending various objects from the panel (50). While the illustrated embodiment shows the use of a hook bolt (60), it will be appreciated that the mounting device (1) is not limited to this specific application. Alternative fasteners, such as machine screws or bolts, may also be used to secure different types of items to the panel (50). Additionally, the mounting device (1) may be used in other panel types, including wood or composite materials, provided the panel thickness and aperture dimensions are compatible.

[0224] Figures 17 and 18 illustrate a second embodiment of the chassis (230), where the engagement formation differs from the first embodiment. Here, the engagement formation is defined by a portion (233) located at the proximal end of the chassis head (235), which also includes a flange section (236) extending radially outward to engage the first side (52) of the panel (50). Unlike in the first embodiment, the mounting bolt (210) features a head (211) with an annular flange portion (219) larger than the chassis aperture. Consequently, the underside of this flange portion (219) contacts both the portion (233) and the chassis flange (236), meaning the bolt head (211) is not recessed within the chassis (230) but can protrude from the panel surface, as shown in Figure 18. This embodiment highlights the versatility of the chassis design, accommodating scenarios where

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[0226] RPMA.2W0

[0227] the head of the mounting bolt (210) remains exposed or protruding from the panel's surface. Such a configuration provides flexibility for various mounting needs and applications.

[0228] Figure 19 depicts a third embodiment of the chassis (330), where the engagement formation (333) differs from earlier designs. In this embodiment, two recessed engagement formations (333) are situated at the ends of two axially extending tabs (331) on the head portion (335), creating discrete locating formations. These tabs (331) fit into the panel aperture to keep the chassis (330) correctly aligned in the aperture. As in the other embodiments, the body portion (337) includes two pairs of posts (338), each pair defining axial channels (339) that engage the pivot protrusions of the fixing component.

[0229] Figures 20a and 20b illustrate another embodiment of the chassis (430). Although it is similar to the chassis (30), the engagement formation now takes the form of a recessed, sloped end formation (433) - in place of the flat end wall - enabling it to accept a countersunk underside of a mounting bolt head (not shown). Additionally, rather than employing an annular flange (36), this chassis (430) features multiple fins (431) extending radially outward from the cylindrical head portion (436). These fins (431) engage the panel aperture's periphery to resist over-insertion and rotation.

[0230] Figures 21 and 22 illustrate another embodiment of the invention, in which a fixing component (520) and a chassis (530) are formed as a single, integrated piece. This design simplifies both assembly and manufacturing by eliminating the need for separate chassis and fixing-component parts.

[0231] The combined component includes a fixing component (520) attached to a chassis head portion (535) by resiliently deformable strips (538). These strips (538) connect to the fixing component (520) via resiliently deformable sections (523), enabling pivoting without risk of breakage. The strips (538) are sufficiently stiff to prevent undesired rotation of the fixing component (520) relative to the chassis (530), thus providing controlled axial movement and stable operation. This resilient connection allows the combined component to shift effectively between its insertable and engageable conditions.

[0232] Figure 21 shows the combined fixing component and chassis in an undeformed state, ready for installation, with the fixing component body (521) and chassis head portion (535) - which has an engagement formation aperture (533) - properly aligned for insertion into a panel aperture.

[0233] 1RPMA.2W0

[0234] In Figure 22, the combined component is shown in use with a mounting bolt (10). As the bolt (10) engages the fixing component's threaded bore and is tightened, the tension causes the resiliently deformable strips (538) to flex, allowing the fixing component (520) to move axially toward the chassis head (531). This arrangement ensures a secure engagement of the fixing component with the panel, offering load-bearing capacity.

[0235] Figure 23 illustrates an alternative embodiment of the mounting bolt (210). In this version, the mounting point provided in the end face (212) of the head (211) of the mounting bolt (210) comprises a deformable core (218). The deformable core (218) is formed of a material such as wood or plastic and extends along the length of the mounting bolt (210) from the end face (212) of the head (211) to the distal tip of the shank (214). This deformable core (218) provides a versatile solution by allowing the mounting device (2) to securely receive and retain a screw or nail. Unlike the threaded bore of other embodiments, the deformable core (218) may not include a central guide aperture, enabling screws or nails to be introduced at any desired location or angle without alignment to the central axis of the mounting bolt (210).

[0236] The mounting bolt (310) shown in Figures 24a and 24b represents another embodiment and features a head (311) with a straight slot (316) on its end face (318) for engagement with a flat-blade screwdriver or similar tool. This embodiment does not include an annular flange with the head of the mounting bolt (311) being wider than the shank (314).

[0237] The underside (313) of the head (311) is countersunk to interface with a compatible engagement formation within a corresponding chassis such as that shown in Figures 20a and 20b. The shank (314) is externally threaded, enabling compatibility with other components of the mounting device.

[0238] In another embodiment of the mounting bolt (410) shown in Figure 25 includes a head (411) with a pivotally attached handle (416). The handle (416) comprises an arcuate body (416a) and bosses (416b) extending inwardly at its ends. These bosses (416b) are received within corresponding recesses on opposite sides of the head (411), allowing the handle (416) to pivot about a transverse axis perpendicular to the longitudinal axis of the mounting bolt (410).

[0239] The handle (416) is configured to pivot between a deployed position, where the arcuate body (416a) extends outwardly beyond the end face (412) of the head (411) to facilitate gripping and rotation, and a stowage position, where the handle (416) lies around the side of the head (411) to minimize

[0240]

[0241] RPMA.2W0

[0242] protrusion. The head (411) also includes an annular flange (419) extending radially outward at the underside, similar to other embodiments, and the shank (414) features external threading for engagement with compatible components.

[0243] In some embodiments, the mounting bolt may comprise a protruding bolt portion (518) that forms a mounting point, as shown in Figure 26, which extends from the end face (512) of the mounting component. This protruding portion (518) is provided with external threading, which is configured to engage with a compatible nut or other fastener for securing the device to a panel.

[0244] Alternatively, the mounting bolt (610) may include a keyhole slot (618), as shown in Figure 27, designed to receive and retain a compatible fastener, such as the head of a screw. This keyhole slot allows for a secure mounting mechanism and provides additional flexibility in the type of fasteners that can be used with the device.

[0245] Figure 28a and 28b demonstrate the mounting device (2) being utilized with a self-tapping screw (70) to attach an additional element, such as a block or further panel (71), to the main panel (50). The main panel (50) includes a first side (52) and a second side (53), with the mounting device (2) secured through a panel aperture (51). The deformable core (218) allows the self-tapping screw (70) to penetrate and engage securely.

[0246] Figure 28b shows a cross-sectional view along line C in Figure 28a, illustrating the self-tapping screw (70) engaged with the deformable core (218) of the mounting bolt (210). The screw (70) extends through the block or further panel (71), securing it to the main panel (50). The annular flange (36) of the chassis (30) engages the first side (52) of the main panel (50), preventing over-insertion, while the fixing component (20) engages the second side (53) of the main panel (50), ensuring a stable and secure connection. The deformable core (218) of the mounting bolt (210) provides a reliable grip for the self-tapping screw (70), making this configuration suitable for applications where screws or nails are preferred over threaded bolts or similar fasteners.

[0247] Figure 28c and 28d demonstrate the mounting device (1) in use with a protruding bolt portion (518) to secure an additional element, such as a block or further panel (71), to the main panel (50). In Figure 28c, the mounting bolt (518) is shown extending through the panel aperture (51) of the main panel (50) and an aperture (72) in the block (71), with the nut (570) being threaded onto the protruding bolt portion (518) to securely attach the block or further panel (71) to the main panel

[0248]

[0249] RPMA.2W0

[0250] (50). The nut (570) engages the threads of the protruding bolt portion (518), holding the block (71) tightly in place.

[0251] Figure 28d shows a cross-sectional view along line D in Figure 28c, illustrating the mounting bolt (518) secured by the nut (570). The nut (570) engages the threads of the bolt (518) while the protruding bolt portion extends through the aperture in the main panel (50) and an aperture (72) in the block (71), with the nut (570) accepted on the protruding bolt (518) and tightened, such that the block (71) is securely mounted.

[0252] The mounting bolts shown and described in the illustrative embodiments are not intended to be limiting, and the invention encompasses mounting bolts with alternative drive heads or combinations of the described features.

[0253] An alternative embodiment of the fixing component (220) is shown in Figure 29, featuring pivot protrusions (223) with distinct flat sections (225 and 226) and a curved section (227). The flat section (225 and 226) configured to serve as a pivot limiting mechanism. With the flat section (225) is configured to abut against the upper post of the chassis, restricting pivoting beyond the predetermined insertable angle. Similarly, the flat section (226) corresponds to the engageable angle, limiting pivoting motion to the range between the insertable and engageable positions. The curved section (227) facilitates smooth and controlled pivoting of the fixing component (220) within this range, ensuring reliable movement between the insertable and engageable conditions.

[0254] Figures 30 to 32 illustrate an embodiment of the fixing component (320) featuring an alternative pivot limiting mechanism. This embodiment includes two pivot limiting protrusions: an upper pivot limiting (325) and a lower pivot limiting (326). As shown in Figure 31, the upper protrusion (325) engages with the upper post (338), restricting pivoting beyond the predetermined insertable angle. Similarly, in Figure 32, the lower protrusion (326) engages with the lower post (338), restricting pivoting beyond the predetermined engageable angle. This configuration ensures controlled pivoting of the fixing component (320) between the insertable and engageable conditions.

[0255] Additionally, in this embodiment, the panel engagement wings (322) are of equal length.

[0256] Figures 33 to 35 illustrate another embodiment of the fixing component (420), which includes an upper wing (422a), a lower wing (422b), a pivot protrusion (423), and a pivot limiting element (426).

[0257]

[0258] RPMA.2W0

[0259] The pivot limiting element (426) is connected to the lower wing (422b) at its distal end. The chassisengaging portion of the pivot limiting element (426) is set back from the lower wing (422b) and is specifically designed to interact with structural features of the chassis (30). This configuration limits the pivoting range of the fixing component (420), effectively preventing excessive pivoting beyond predetermined angles when transitioning between the insertable and engageable conditions.

[0260] Additionally, the pivot limiting element (426) facilitates controlled pivoting, ensuring smooth transitions while maintaining operational alignment.

[0261] In the insertable condition (Figure 35), the fixing component (420) aligns along the longitudinal axis of the chassis (30). This alignment allows the entire assembly to be inserted through the panel aperture with the pivot limiting element (426) guiding and restricting the direction of pivot as the fixing component (420) transitions toward the engageable condition.

[0262] In a further embodiment, the fixing component (520) shown in Figures 36 and 37 illustrates a symmetrical design of the panel engagement wings (522), which are configured to extend at an angle relative to the axis of the fixing component body. This version of the fixing component features two identical engagement wings that are positioned symmetrically on opposite sides of the fixing component body.

[0263] In some embodiments, the invention extends to a mounting assembly in which the mounting device (1), as detailed above, is coupled to a panel. The mounting bolt (10) extends through a panel aperture (51), with the chassis (30) engaging the panel from its first side (52) and the fixing component (20) engaging the second side (53). In this assembled state, the panel is effectively "sandwiched" by the chassis head portion (35) on one side and the fixing component (20) on the other, creating a stable, load-bearing mounting point. Figures 11 to 16 illustrate one example of such a mounting assembly, in which the mounting device (1) is installed in a plasterboard panel (50). However, it will be appreciated that the same assembly may be employed with alternative panel materials, such as wood or composites, provided the panel aperture (51) is compatible with the chassis dimensions.

[0264] In the above-described embodiments, the mounting device (1) is provided as a pre-assembled unit comprising the mounting bolt (10), fixing component (20), and chassis (30). However, in other embodiments, the mounting bolt (10), fixing component (20), and chassis (30) may be provided as

[0265]

[0266] RPMA.2W0

[0267] individual items or as a kit of parts, which can be assembled by a user prior to installation on a panel. Optionally, the kit may also include various mounting bolts and compatible fasteners (e.g., hooks, screws, nuts) for a specific mounting application. By supplying these elements together, the kit simplifies installation and ensures compatibility among the chassis, fixing component, and mounting bolt.

[0268] While specific embodiments of the present invention have been described in detail, it will be appreciated by those skilled in the art that the embodiments described in detail are not limiting on the scope of the claimed invention.

[0269]

Claims

RPMA.2W0CLAIMS1. A mounting device configured to be coupled to a panel, the mounting device comprising:a mounting bolt comprising a head and a shank provided with external threading, the head of the mounting bolt including an end face having a mounting point configured to accept and retain a fastener;a fixing component comprising a body having a threaded bore that is engageable with the external threading of the shank of the mounting bolt, and at least one panel engagement wing rigidly connected to the body, the at least one panel engagement wing extending radially from the body;a chassis configured to be coupled to the fixing component, the chassis comprising: a) a head portion at a proximal end of the chassis, the head portion being configured to physically engage with the panel to resist passage of the head portion through a panel aperture when in use;b) a chassis aperture extending through the head portion to receive the mounting bolt;c) a body portion configured to receive the mounting bolt therethrough, the body portion extending from the head portion toward a distal end of the chassis, wherein the body portion is further configured to:i. extend through the panel aperture when in use;ii. enable the fixing component to pivot about a pivot axis relative to the chassis;ill. enable axial movement of the fixing component along a chassis axis between the proximal end and the distal end; andiv. restrict rotational movement of the fixing component relative to the chassis;d) an engagement formation, which is arranged to engage the head of theRPMA.2W0mounting bolt in order to resist passage of the mounting bolt head through the chassis, wherein:i. the engagement formation comprises at least one projection extending radially inward from a path corresponding to the periphery of the chassis aperture;ii. the engagement formation is recessed relative to the chassis aperture; andill. the entire head of the mounting bolt is configured to be received within the chassis aperture, and wherein the end face of the mounting bolt is substantially flush with or recessed relative to the proximal end of the chassis; ande) a restraint mechanism configured to oppose an external axial force applied to the fixing component toward the distal end;wherein, when the fixing component is coupled to the chassis, it is pivotable between:an insertable condition, in which the fixing component body is disposed at an angle such that the fixing component is entirely contained within a locus corresponding to the periphery of the panel aperture, permitting insertion and removal of the fixing component from a first side of the panel; andan engageable condition in which the fixing component body is oriented substantially perpendicular to the chassis axis, thereby positioning the at least one panel engagement wing radially beyond the periphery of the panel aperture so as to engage a second side of the panel as the fixing component is drawn toward the head portion.

2. A mounting device configured to be coupled to a panel, the mounting device comprising:a mounting bolt comprising a head and a shank provided with external threading, the head of the mounting bolt including an end face having a mounting point configured to accept and retain a fastener;a fixing component comprising a body having a threaded bore that is engageable withRPMA.2W0the external threading of the shank of the mounting bolt, and at least one panel engagement wing rigidly connected to the body, the at least one panel engagement wing extending radially from the body;a chassis configured to be coupled to the fixing component, the chassis comprising: a) a head portion at a proximal end of the chassis, the head portion being configured to physically engage with the panel to resist passage of the head portion through a panel aperture when in use;b) a chassis aperture extending through the head portion to receive the mounting bolt; c) a body portion configured to receive the mounting bolt therethrough, the body portion extending from the head portion toward a distal end of the chassis, wherein the body portion is further configured to:i. extend through the panel aperture when in use;ii. enable the fixing component to pivot about a pivot axis relative to the chassis;ill. enable axial movement of the fixing component along a chassis axis between the proximal end and the distal end; andiv. restrict rotational movement of the fixing component relative to the chassis; d) an engagement formation, which is arranged to engage the head of the mounting bolt in order to resist passage of the mounting bolt head through the chassis; and e) a restraint mechanism configured to oppose an external axial force applied to the fixing component toward the distal end;wherein, when the fixing component is coupled to the chassis, it is pivotable between:an insertable condition, in which the fixing component body is disposed at an angle such that the fixing component is entirely contained within a locus corresponding to the periphery of the panel aperture, permitting insertion and removal of the fixing component from a first side of the panel; andRPMA.2W0an engageable condition in which the fixing component body is oriented substantially perpendicular to the chassis axis, thereby positioning the at least one panel engagement wing radially beyond the periphery of the panel aperture so as to engage a second side of the panel as the fixing component is drawn toward the head portion.

3. The mounting device as claimed in claim 2, wherein the engagement formation comprises at least one projection extending radially inward from a path corresponding to the periphery of the chassis aperture.

4. The mounting device as claimed in claim 2 or 3, wherein the engagement formation is recessed relative to the chassis aperture.

5. The mounting device as claimed in any of claims 2 to 4, wherein the entire head of the mounting bolt is configured to be received within the chassis aperture, and wherein the end face of the mounting bolt is substantially flush with or recessed relative to the proximal end of the chassis.

6. The mounting device as claimed in any preceding claim, wherein the at least one panel engagement wing is integrally formed with the body as a single piece.

7. The mounting device as claimed in any preceding claim, wherein the head portion further comprises a locating formation configured to locate the chassis within the panel aperture.

8. The mounting device as claimed in claim 7, wherein the locating formation:is formed by a circular wall extending axially from the chassis aperture, forming a hollow cylindrical structure configured to be seated within the panel aperture; or comprises at least one tab extending from the chassis aperture configured to be seated within the panel.

9. The mounting device as claimed in claim 7 or 8, wherein the engagement formation is provided as part of the locating formation.

10. The mounting device as claimed in any preceding claim, wherein the engagement formation comprises at least one feature selected from the group consisting of: a flange, at least one lip, at least one rib, or one or more discrete structures.RPMA.2W011. The mounting device as claimed in any preceding claim, wherein an underside of the head of the mounting bolt is chamfered or inclined at an angle relative to the longitudinal axis of the shank, such that the angled surface engages with a corresponding engagement formation on the chassis.

12. The mounting device as claimed in any preceding claim, wherein the mounting point comprises at least one of:a threaded bore configured to receive the threaded shank of a compatible fastener; a protruding bolt portion extending from the end face of the mounting bolt and provided with external threading, configured to accept a compatible nut or compatible fastener; ora keyhole slot configured to accept a compatible fastener.

13. The mounting device as claimed in any preceding claim, wherein the mounting point comprises a deformable core that is configured to receive a screw with a self-tapping thread or a nail.

14. The mounting device as claimed in claim 13, wherein the deformable core comprises a solid block of wood or plastics material.

15. The mounting device as claimed in any preceding claim, wherein the head of the mounting bolt is configured to be engaged by a tool in order to facilitate rotation of the mounting bolt during installation of the mounting device.

16. The mounting device as claimed in any preceding claim, wherein the head of the mounting bolt is provided with a handle that is pivotable with respect to the head of the mounting bolt between a stowage position and a deployed position, wherein the handle extends outwardly beyond the end face of the head of the mounting bolt and is configured to be gripped, in order to facilitate rotation of the mounting bolt when in the deployed position.

17. The mounting device as claimed in any preceding claim, wherein the head portion of the chassis has an over-insertion feature to prevent over-insertion through the panel aperture.

18. The mounting device as claimed in claim 17, wherein the over-insertion feature comprises aRPMA.2W0radially extending flange, wherein said flange is configured to engage with the panel when in use to prevent over-insertion through the panel aperture.

19. The mounting device as claimed in any preceding claim, wherein the chassis includes a rotation restriction feature configured to prevent relative rotation between the chassis and the panel.

20. The mounting device as claimed in any preceding claim, wherein the head portion of the chassis comprises one or more radially extending fins, wherein said fins are configured to engage with the panel to provide at least one of a rotation restriction feature and an over-insertion feature.

21. The mounting device as claimed in any preceding claim, wherein the at least one panel engagement wing of the fixing component extends at an angle relative to the axis of the fixing component body, and wherein, in the insertable condition, the panel engagement wing is contained within a locus corresponding to the periphery of the panel aperture.

22. The mounting device as claimed in any preceding claim, wherein the fixing component comprises two diametrically opposed panel engagement wings.

23. The mounting device as claimed in claim 22, wherein the panel engagement wings are asymmetrical, with one wing being longer than the other.

24. The mounting device as claimed in any preceding claim, wherein the body portion comprises at least one channel extending axially along an axis parallel to the chassis axis, each channel being configured to engage with a respective pivot protrusion extending from the fixing component in a radial direction, such that, when in use, the engagement between the channel and the respective protrusion:enables axial movement of the fixing component along the axis between the proximal and distal ends;enables the fixing component to pivot about a pivot axis; andrestricts rotational movement of the fixing component relative to the head portion; 25. The mounting device as claimed in claim 24, wherein the body portion comprises two pairs ofRPMA.2W0rails extending from the head portion, wherein the fixing component is captured between said pair of rails and the channel is defined between the rails in the pair.

26. The mounting device as claimed in any preceding claim, wherein the restraint mechanism comprises an end feature at the distal end of the body portion, said end feature being configured to prevent axial movement of the fixing component beyond the end feature.

27. The mounting device as claimed in any of claims 1 to 23, wherein the chassis and the fixing component are formed as a single, integral piece, with the body portion of the chassis being connected to the fixing component by at least one resiliently deformable pivot region, such that the pivoting movement of the fixing component relative to the chassis is enabled by the deformation of the resiliently deformable pivot region, wherein the body portion comprises at least one resiliently deformable strip that allows axial movement of the fixing component towards the head of the chassis due to the deformation of the body portion.

28. The mounting device as claimed in any preceding claim, wherein the restraint mechanism comprises at least one resiliently flexible and / or deformable tether extending from the head portion of the chassis and coupled to the fixing component.

29. The mounting device as claimed in any preceding claim, wherein the mounting device further comprises at least one pivot limiting mechanism configured to limit the range of pivoting motion of the fixing component relative to the chassis, such that the fixing component can only pivot within a predetermined range of motion.

30. The mounting device as claimed in claim 29, wherein the pivot limiting mechanism is arranged on at least one pivot protrusion comprising an asymmetric shape with a rounded section that allows smooth pivoting within a channel of the chassis, and at least one flat section configured to engage with corresponding inner surface of the channel to restrict pivoting beyond a predetermined angle or angles.

31. The mounting device as claimed in claim 29, wherein the fixing component comprises at least one pivot limiting protrusion positioned on the body or panel engagement wing of the fixing component, wherein each pivot limiting protrusion is configured to interact with a structural feature of the chassis to limit the range of pivoting motion.RPMA.2W032. A kit of parts for forming a mounting device configured to be coupled to a panel, the kit comprising:the chassis,the fixing component, andthe mounting bolt,each as defined in any one of the preceding claims.

33. A mounting assembly comprising:a panel having a first side and an opposing second side with a panel aperture extending therebetween; andthe mounting device as claimed in any one of claims 1 to 31,wherein the mounting bolt extends through the panel aperture, the chassis engages the first side of the panel to resist movement of the mounting bolt in a first direction from the first side toward the second side, and the at least one panel engagement wing of the fixing component engages the second side of the panel to resist movement of the mounting bolt in a second direction opposite to the first direction.

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