GB2589945A

GB2589945A - Electrical socket

Info

Publication number: GB2589945A
Application number: GB2012031.7A
Authority: GB
Inventors: Savage Martin
Original assignee: Smart Fit Socket Ltd
Current assignee: Smart Fit Socket Ltd
Priority date: 2019-08-01
Filing date: 2020-08-03
Publication date: 2021-06-16
Also published as: GB2602676A; GB201911015D0; GB202101581D0; GB202012031D0; GB2586216A; WO2021019520A1

Abstract

An intermediate socket assembly 100 suitable for installation into a pattress box 400 comprises a socket (figure 7a, 706) configured to receive pins (figure 12b, 605) of a plug of a front plate socket assembly 600 and to supply electrical power to the plug. The intermediate socket assembly 100 further comprises a busbar (figure 6a, 505, 506) in electrical communication with the socket (figure 7a, 706), configured to be connected to the mains electricity supply. This arrangement allows for reduced effort of installation. A front plate socket assembly 600 comprises pins (figure 12b, 605) and a socket (figure 12a, 601) suitable for receiving a consumer plug. The front plate assembly 600 may be secured to the intermediate socket assembly 100. The intermediate socket assembly 100 may fit completely within a pattress box 400. Indicia (figure 7a, 707) may be provided on a front face of the intermediate socket assembly 100.

Description

ELECTRICAL SOCKET

TECHNICAL FIELD

The present invention relates to the field of electrical sockets, and particularly but not exclusively to intermediate socket assemblies for an outlet of a mains electricity supply that provide temporary electrical outlets and allow improved ease of installation. The invention further relates to components of electrical sockets including intermediate socket assemblies, front plate socket assemblies and cover plates, and assemblies and kits of parts comprising components of electrical sockcts.

BACKGROUND

The wiring of a building conventionally has two main stages, plus in many cases (depending on product selection) a 'finishing' stage (face plates etc.). In the first stage, known as the first fix, an electrician will run the required wiring through the building and fit pattress boxes (also known as back boxes, wall boxes, or work boxes) for sockets in the required locations, leaving wiring loose within the boxes, but capped to ensure safety.

After this first fix, required structural and finishing works are carried out on the building, such as plastering. There is a problem with other trades working around open back boxes with cables sitting in the back box which may become loose and impede the following trades in terms of quality, may require blanking infills and generally do not enable an efficient and clean management of these following trades.

Once this structural work is completed the electrician can return to carry out the second stage, known as the second fix, in order to complete the wiring work. This second fix is a required additional step, with the electrician often required to remove any plaster build up and/or damage in the pattress boxes that has occurred due to the structural work. The second fix can then be completed with the provision and fitting of consumer ready front plates which are required to be physically wired in to the wiring provided by the first fix and attached to the pattrcss boxes. Finally the completed electrical installation can be tested and certified.

There is a repeated issue again with a certified/tested second fix plate whereby following trades carrying out snagging/making good to these second fix plates have to tape up and protect these as they are essentially a finished element. The cost/time and quality assuarance implications associated within this work and the requirement to track/log and damage and issue out contra charges to associated trades. There is also the additional issue with tested sockets being livened up, along with lighting which is required for the making good phases of previous trades and also the decorating stage. This can cause a problem in terms of risk for the electrical firm because at this intermediate stage, while tested, it is not handed over to the client. The final trades are essentially 'wet trades' and there is still a risk of liquid and dust ingress into a finished socket.

It is an aim of the present invention to at least ameliorate some of the above identified problems associated with the prior art, as well as to facilitate an improved electrical supply installation process for an electrical socket.

SUMMARY OF INVENTION

According to a first aspect of the present invention there is provided an intermediate socket assembly for installation into a pattress box. The intermediate socket assembly comprises a socket configured to receive pins of a plug of a front plate socket assembly and to supply electrical power to the plug, and a busbar in electrical communication with the socket, and configured to be connected to the mains electricity supply.

The intermediate socket assembly may be used with a modified pattress or back box and provides an intermediate connection block with a connection socket The intermediate socket assembly described above may provide a temporary electrical output for use during construction, decorating, plastering or other renovation works either through a standard three pin socket arrangement or a non-standard three pin socket arrangement as provided by the front plate socket assembly.

The intermediate socket assembly may also provide a means for a second fix to be completed with increased ease over systems and methods known in the art. Advantageously, the intermediate socket assembly allows a less skilled user or end user to complete the installation without requiring the services of a skilled electrician or similar for the second fix.

The intermediate socket assembly may also allow the front plate socket assembly to be easily removed by an end user. This may allow, for example, the user facing sockets to be replaced with an alternative configuration of sockets as needed. On a simple level, a socket having USB type A sockets may be replaced by an alternative socket having USB type C sockets without requiring a full rewiring of the electrical socket. Similarly, sockets could be easily changed over to allow for changing user habits, for example replacing conventional plug sockets (such as Type G sockets used in the UK) with those of a different country or arrangement.

The mains electricity supply may be a domestic or industrial electricity supply, and/or may be used in any setting in which electrical socket outlets are required. The configuration of the intermediate socket assembly may be modified to suit any territorial requirements or standards, accounting for differing territorial plug/socket arrangements, voltage regimes and the like.

In an embodiment, the intermediate socket assembly may further comprise securing means, wherein the securing means may be configured to secure a front facing component to a front of the intermediate socket assembly.

Using the securing means the front facing component can be secured to the intermediate socket assembly, which in turn can be fastened to the pattress box, the pattress box being secured to the wall. Other configurations may also be suitable. In such embodiments the front facing component may be considered as being indirectly secured to the wall, and providing a point of interaction for an end user.

There may also be a cover plate that is provided over the front plate socket assembly and this is intended to provide protection from ingress of detritus into the intermediate socket assembly during plastering, decorating and the like. It may further prevent unauthorised use of the socket of the intermediate socket assembly in case access needs to be restricted.

The front facing component may be a front plate socket assembly. In such embodiments, the front plate socket assembly is configured to receive a commercial electrical plug.

The socket may be configured to provide a connection to a mains electricity supply.

In embodiments, the securing means may comprise releasable securing means. The releasable securing means may comprise a threaded hole configured to receive a screw. The securing means may be configured to correspond to the securing means provided on pattress boxes known in the art. Having securing means corresponding to the securing means provided on pattress boxes known in the art can provide standardisation and allow the use of conventional screws and securing means currently in use.

Alternatively, the intermediate socket assembly may be configured to sit entirely within a pattress box when fitted. Having the intermediate socket assembly sit sub flush and/or entirely within the pattress box when fitted allows the top socket assembly to be inserted into it such that the top socket assembly sits either flush or slightly proud from the wall. Having the top socket assembly sit flush or slight proud to the wall may be considered more aesthetically pleasing to an end user, as well as being less intrusive into a room, potentially hampering movement or placement of furniture.

The intermediate socket assembly may further comprise indicia. The indicia may be located on a front face of the intermediate socket assembly. The indicia may provide an indication that the intermediate socket assembly is only for temporary use. They may provide information regarding intended use or ratings of the electrical systems in which the intermediate socket assembly is suitable for use.

The intermediate socket assembly may further comprise front facing apertures. The front facing apertures may be configured to allow a tool to pass through to facilitate securing of wires of the electrical supply to terminals of the busbar, Providing access to the securing of the wires from the front of the intermediate socket assembly facilitates having a more compact intermediate socket assembly. it also ensures that the wires are not loosed in front of the intermediate socket assembly, therefore making the intermediate socket assembly suitable for use as a temporary electrical socket.

The intermediate socket assembly may further comprise an intermediate socket plate and a busbar housing subassembly. The intermediate socket assembly may be constructed from a plurality of modular components allows for ease of fabrication. The intermediate socket assembly and the busbar housing subassembly may be sealed together in order to improve the integrity of the intermediate socket assembly.

The intermediate socket assembly may further comprise a safety gate. The safety gate may be configured to restrict access to the socket. Restricting access to the socket provides additional means to dissuade a user from using the intermediate socket assembly as a permeant fixture. The safety gate also improves the safety of the intermediate socket assembly as it helps to prevent insertion of unwanted objects into the socket.

A further aspect of the invention provides an electrical socket. The electrical socket may comprise the intermediate socket assembly of any embodiment of the preceding aspect. The electrical socket may further comprise at least one of a pattress box and a cover plate.

A further aspect of the invention provides a front plate socket assembly for a domestic electrical supply. The front plate socket assembly may comprise a plug. The plug may be configured for insertion into a socket of an intermediate socket assembly. The front plate socket assembly may further comprise a socket, configured to receive a consumer electrical plug.

Instead of a socket the front plate socket may further comprise a fuse compartment.

The front plate socket assembly may therefore be configured to act as a fused connection unit as known in the art.

The front plate socket assembly may further comprise securing means. The securing means may be configured to secure the front plate socket assembly to a front of an intermediate socket assembly, The front plate socket assembly may further comprise securing means for attaching to an intermediate socket assembly.

The securing means may be releasable securing means.

The releasable securing means may comprise a hole configured to receive a screw. The securing means may be configured to correspond to the securing means provided on pattress boxes known in the art. Having securing means corresponding to the securing means provided on pattress boxes known in the art provides standardisation and allows the use of conventional screws and securing means currently in use.

A further aspect of the invention provides a cover plate configured to be temporarily securable to an intermediate socket assembly so as to prevent detritus ingress into the intermediate socket assembly.

The cover plate according may further comprise a raised rim on a front facing surface configured to provide a plastering bead when in use.

Providing a plastering bead on the cover plate assists the plasterer in plastering up to a defined point. In this way it also aids in preventing the cover plate from accidentally being plastered over or being mistaken for a blanking plate.

A further aspect of the invention provides a socket assembly or kit of parts comprising an intermediate socket assembly and a front plate socket assembly. The intermediate socket assembly and the front plate socket assembly may be the intermediate socket assembly and the front plate socket assembly of the preceding aspects.

The socket assembly may further comprise a cover plate. The cover plate may be the cover plate of the preceding aspect.

The socket assembly may further comprise a pattress box.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 shows an exploded view from the front of a socket assembly according to an embodiment of the invention for insertion into an aperture of a wall; Figure 2 shows an exploded view front the rear of a socket assembly according to a further embodiment of the invention for insertion into an aperture of a wall; Figure 3 shows an exploded view from the front of an intermediate socket assembly according to a further embodiment of the invention and a pattress box for insertion into an aperture of a wall; Figure 4a shows a pattress box of embodiments of the present invention when viewed from the front; Figure 4b shows an isometric view of the pattress box of Figure 4a: Figure 5a shows an isometric view of a busbar housing of embodiments of the present invention when viewed from the rear: Figure 5b shows an sometric vie of the busbar housing of Figure 5a when viewed from the front; Figure 6a shows a view of a busbar housing sub-assembly of embodiments of the present invention when viewed from the front; Figure 6b shows an isometric view of the busbar housing sub-assembly of Figure 6a when viewed from the front; Figure 7a shows an isometric view of an intermediate socket plate of embodiments of the present invention when viewed from the front; Figure 7b shows an isometric view of the intermediate socket plate of Figure 7a when viewed from the rear; Figure 8 shows an isometric, exploded view of the intermediate socket plate to of Figures 7a and 7b when viewed from the rear, Figure 9 shows an isometric view of an intermediate socket assembly according to embodiments of the present invention when fitted into a pattress box in a wall; Figure 10a shows an isometric view of a cover plate of embodiments of the present invention when viewed from the front; Figure 10b shows an isometric view of the cover plate of Figure 10a when viewed from the rear; Figure 11 shows an isometric view of a cover plate of embodiments of the present invention fitted over an intermediate socket assembly according to embodiments of the present invention fitted into a pattress box in a wall; Figure 12a shows an isometric view of a front plate socket assembly of embodiments of the present invention when viewed from the front; Figure 12b shows an isometric view of the front plate socket assembly Figure 12a when viewed from the rear; Figure 13a shows an exploded view from the front of a socket assembly according to an embodiment of the invention; Figure 13b shows an exploded view from the rear of a socket assembly of Figure I3a; Figure 14 shows an exploded view from the front of a socket assembly according to an alternative embodiment of the present invention; Figure I5a shows a rear view of a pattress box according to embodiments of the present invention; Figure 15b shows a front view of the pattress box of Figure I5a; Figure 16a shows a front view of an intermediate plate assembly configured to be used with the patress box of Figures 15 and according to embodiments of the present invention; Figure 16b shows a rear view of the intermediate plate assembly of Figure 16a; Figure 17a shows a front view of a front plate socket assembly for use with the intermediate plate assembly of Figures 16 according to embodiments of the present invention; and Figure I 7b shows a rear view of the front plate of Figure I 7a.

DETAILED DESCRIPTION

The examples given herein are focussed on a UK-style three prong domestic plug types; however, it will be appreciated by the skilled person that modifications may be made by which to encompass various plug designs and specifications of other jurisdictions. As such the invention is not considered limited by territorial design specifications or standards because the skilled person may simply refer to any such standards and make the modifications required using routine processes.

For ease of reference, orientation of the components is described relative to their position when fully installed in an aperture of a wall of a building. As such, front refers to a side of the components that faces out from the wall and back faces into the wall. There is no limitation implied by this orientation, but only to provide a more intuitive frame of reference.

Figure 1 shows an exploded view of a socket assembly according to an embodiment of the present invention. A pattress box 400 is a rearmost component and provides a structural connection to a wall 10 for the other components. An intermediate socket assembly 100 is the next component in front of the pattress box. in the present embodiment, the intermediate socket assembly 100 comprises a subset of components, a busbar housing subassembly 200 and an intermediate socket plate 700. It can be appreciated that other embodiments may combine these components into a unitary piece. Further forward there is provided two front facing components: a cover plate 300 and a front plate socket assembly 600. The cover plate 300 and the front plate socket assembly 600 are configured to be secured to the front of the intermediate socket assembly 100. The front facing components 300, 600 can be alternately fit in dependence on the required use or current phase of building/renovation works or the like.

Figure 2 shows the socket assembly of Figure 1 from the rear, but with the cover plate 300 omitted for clarity. The pattress box 400 is fitted into an aperture 14 of the wall 10. Preferably, the aperture, and therefore pattress box, is located proximal or on a stud 11 or other structurally secure part of the wall. This allows the pattress box 400 to be securely fitted.

Returning to a front view. Figure 3 shows just the intermediate socket assembly 100 and the pattress box 400 ready to be installed into the wall aperture 14.

Figures 4a and 4b show the pattress box 400 from a front and isometric view respectively. The pattress box 400 comprises a rear most portion 410. The rear most portion 410 is arranged such that it can provide a first attachment point 411 within the wall, preferably to a stud or other solid, structural component of the wall. The attachment point 411 of the rear most portion 410 comprises at least one hole 411 through which a screw can inserted. Preferably a pair of holes 411 is provided. The rear most portion 410 also provides structural integrity to the pattress box 400. The pattress box 400 further comprises a frame 420. The frame 420 provides structural integrity and defines the outer perimeter of the box. The frame has a width and height that corresponds to the widths and heights of pattress boxes known in the art. Second attachment points 430 are provided. The second attachment points 430 provide attachment points for the intermediates socket assembly to be attached to the pattress box 400. The second attachment points 430 are provided at a rearward position such that they are more proximal to a back of the pattress box than they are its front. This differs from conventional pattress boxes which have their corresponding attachment points situated proximal to the front of the box. The second attachment points 430 are provided as a plurality of tabs 432 within the pattress box 400. The tabs 432 are attached to the frame 420 and extend inwardly to the box 400. Each tab 432 comprises a hole 431. The box 400 is stamped or cut from sheet material as a net and then folded and joined to form the box. The sheet material is a metal. The metal is preferably steel. The steel is preferably galvanised steel.

An intermediate socket assembly 100 is provided which is formed from two subassemblies: a busbar housing sub-assembly 200 and an intermediate socket plate 700. As noted above, although shown as being formed of two sub-assemblies in this embodiment, embodiments haying the busbar housing sub-assembly 200 and intermediate socket plate 700 integrated into one assembly are envisaged.

The busbar housing sub-assembly 200 comprises a busbar housing 500 and a plurality of busbars 504, 505, 506. Figures 5a and 5b show the busbar housing 500 on its own. The busbar housing comprises at least one entry point 501 for receiving one or more wires associated with a mains electricity supply. The entry point(s) 501 may comprise one or more holes formed in a wall of the busbar housing 500. The entry point(s) 501 comprise a plurality of entry points. The plurality of entry points 501 correspond to the wires contained within a cable of a mains electricity supply. The plurality of entry points 501 comprise a plurality of groups of entry points. Each group of entry points comprises three holes 501, each hole corresponding to one of a live L, earth E or neutral N wire of a mains electricity supply. The groups of entry points 501 are arranged in pairs. A first group of a pair of groups of entry points is provided on a top of the busbar housing 500, thereby allowing wires to be passed throughout from above the busbar housing 500 when in-situ. A second of the pair of groups of entry points is provided on a bottom of the busbar housing 500, thereby allowing wires to be passed through from below the busbar housing when in-situ. The groups of entry points may comprises multiple groups so as to allow a feed to supply electricity to the socket assembly as well as having a second feed going away from the socket assembly, continuing the circuit around the building in a ring main arrangement.

The busbar housing 500 further comprises attachment points 502. The attachment points 502 correspond to the second attachment points 430 of the pattress box. The attachment points 502 comprise a plurality of holes formed in a wall of the busbar housing 500. The busbar housing 500 further comprises locating means 503. The locating means correspond to arrangements of prongs of a plug of the front plate socket assembly. In this particular example there are three locating means 503, corresponding to the three prongs of a UK-style plug. The locating means 503 are configured to locate the busbar in the correct location. The busbar housing 500 is of unitary construction and may be formed from injection moulding. A thermoplastic, for example ABS, is used to construct the housing from.

The busbars 504, 505, 506 are made from a conductive material, particularly a metal, such as copper. Each busbar 504, 505, 506 corresponds to one of the live L, earth E and neutral N wires of the mains electricity supply of a UK electricity supply. As previously noted, it can be appreciated that the number of busbars may be altered for different country electricity supply and wiring preferences. Each busbar 504, 505, 506 comprises a female interconnecting contact 507, 508, 509. Each female interconnecting contact 507, 508, 509 is configured to receive a prong of a plug of the front plate socket assembly. Each busbar further comprises at least one terminal 510, 511, 512. Each terminal 510, 511, 512 corresponds to one of the live L, earth E or neutral N wire of the mains electricity supply. Each busbar 504, 505, 506 provides an electrical connection between its respective female interconnecting contact 507, 508, 509 and terminal(s) 510, 511, 512. The busbars 504, 505, 506 may be configured to be used in an intermediate socket assembly to be used in a ring main, and therefore each busbar 504, 505, 506 may comprises a plurality of terminals 510, 511, 512, and, in particular, a pair of tenninals. Each terminal 510, 511, 512 comprises a securing means by which an end of a respective wire may be retained within the terminal. The securing means each comprise a screw retained within the terminal. The screw is configured to be tightened and loosened so as to secure the wire within the terminal. Each terminal 510, 511, 512 is aligned with at least one of the plurality of entry points 501 when the busbars are fitted into the busbar housing. The female interconnecting contacts 507, 508, 509 are positioned and constrained by the locating means 503. Each busbar 504, 505, 506 is substantially rigid and as such positioning the female interconnecting contacts 507, 508, 509 also positions the terminals 510, 511, 512 correctly. By semi-rigid, it is meant that whilst the busbar may be flexible it is rigid enough to maintain its form when in-situ. Each busbar 504, 505, 506 may be further secured within the housing 500 by being glued in place.

As shown in Figures 7a and 7b, the intermediate socket plate 700 comprises a face plate 701. The intermediate socket plate comprises a first set of attachment means 702. The first set of attachment means 702 comprise a plurality of holes that pass through the face plate 701. The first set of attachment means 701 correspond to the attachment points 502 of the busbar housing sub-assembly 200. A screw is passed through the holes 702 and into the attachment points 502, which may comprises threads configured to receive the screw. The intermediate socket plate 700 further comprises a second set of attachment means 703. The second set of attachment means 703 are configured to receive reciprocal attachment means of the front plate socket assembly 600. The second set of attachment means comprise one or more bosses with a hole 703 formed therein. Preferably the second set of attachment means 702 comprise a pair of attachment means, corresponding in location to the position of the attachment means found in pattress boxes known in the art configured to receive a domestic plug socket. Each hole 703 comprises either a thread or other interconnecting feature to secure a screw therein.

The intermediate socket plate 700 further comprises at least one aperture 705. The aperture(s) are configured to allow a tool, such as a screwdriver, to pass through in order to access the terminals 510, 511, 512 of the busbars 504, 505, 506. The at least one aperture 705 may comprise a plurality of apertures, each aperture corresponding to a terminal 510, 511, 512. Indicia 707 are provided to indicate which aperture 505 corresponds to which terminal 510, 511, 512 such that it can be seen which of the live L. earth E, or neutral N wires are being connected. Further 707 indicia are provided which provide information relevant to the installer. The information may include the current or voltage rating of the intermediate socket assembly 100 and/or what current type it should be used with, i.e. alternating current AC in domestic supplies.

The intermediate socket plate 700 further comprises a socket 706. The socket is configured to receive prongs of a plug of the front socket assembly 400, in this example the socket has the same characteristic dimensions of a UK-style domestic electrical socket. This therefore provides an electrical outlet for the use of tools or other electrical appliances, without requiring the provision of extension leads or generators. Other configurations are envisaged. The socket and plug may instead have configurations specific to themselves, in order to prevent the use of the socket 706 for other means.

The intermediate socket plate 700 further comprises a safety gate 708. The safety gate is configured to restrict access to the socket 706. The safety gate comprises a safety plate 709. The safety plate 709 has a profile configured to correspond to the socket 706, such that when in place the safety plate at least partially restricts access to the socket 706. A portion of the safety plate 709 is located behind an uppermost aperture of the socket. This portion has a three dimensional, chamfered shape, such that upon insertion of a prong into the aperture of the socket 706 the safety plate 709 is translated downwards. A biasing means 710 is configured to bias the safety plate 709 into position behind the apertures of the socket 706. The biasing means 710 comprises a spring e.g. a coil spring. A retaining component 711 provides a housing for the biasing means 710 and the safety plate 709. The retaining component 711 is configured to slot into corresponding receiving features of the face plate 701.

Securing means 712 e.g. screws or rivets, arc provided to fasten the retaining component 711 to the face plate 701, with the biasing means 710 and the safety plate 709 retained within a void formed between the face plate 701 and the retaining component 711.

Alternative examples of joining the intermediate socket plate 700 to the busbar housing sub-assembly 200 are envisaged. For example the first set of attachment means 702 may comprise clips which correspond to reciprocal features on the busbar housing assembly. In some examples the intermediate socket assembly is supplied as a sealed unit. As such, in those examples the intermediate socket plate 700 and the busbar housing assembly 200 may be glued or welded together, or joined by other non-releasable means As noted, in some examples the intermediate socket assembly 100 is provided as a single part. Therefore, any features given as examples as being relevant to either the busbar housing sub-assembly 200 or the intermediate socket plate 700 are equally applicable to the intermediate socket assembly 100 as a whole.

The cover plate 300 is shown in in Figures 10a and lob. The cover plate 300 has a substantially flat profile to provide as little intrusion as possible. Securing means 301 are provided. The securing means 301 correspond to the second set of attachment means 703 of the intermediate socket assembly 100. The securing means are configured for temporarily securing the cover plate, such that it can be easily attached and removed as required. lndicia 302 are provided to give information to a user. The indicia 302 may provide warning that the cover plate should not be removed. A bead (not shown) may be provided on the front of the cover plate 300. The bead may provide a plasterers bead in order to provide a defined location up to which plaster may be applied. The bead therefore runs along at or proximal to the perimeter the cover plate 300 and upstands. The bead may be spaced from the upstand a distance of between 0 and 5mm, and preferably 3mm. The rear of the cover plate 300 comprises a locating means 303. The locating means provides means to locate the cover plate onto the intermediate socket assembly and prevent unwanted rotation or movement when being secured. The locating means also provide a sealing means in order to prevent ingress into the intermediate socket assembly when installed. Additional sealing means may be provided.

The front plate socket assembly 600 is shown in more detail in Figures 12a and 12b. The front of the front plate socket assembly 600 resembles the front of a convention& domestic plug socket. Various configurations are envisaged in which the features on the front of the front plate socket assembly are arranged, omitted or replaced to resemble other plug socket fronts currently on the market. In this example the socket comprises two different socket types 601, 602. The first socket type 601 is a standard UK domestic socket type. The second socket type 602 is a USB socket type. Other socket types are envisaged and the front plate socket assembly may be modified to suit new sockets as they come on the market or to suit sockets of different standards in various jurisdications. Switches 603 are provided to isolate the first socket types 601.

The front plate socket assembly further comprises securing means 604. The securing means 604 correspond to the second set of attachment means 703 of the intermediate socket assembly 100 (figure 7a). The securing means 604 are configured for releasably securing the front plate socket assembly, such that it can be easily attached and removed as required, when redecorating, or when a substitute front plate socket plate assembly is to be provided for example.

The back of the front plate socket assembly 600 comprises a plug 605, as shown in figure 12b. The plug 605 is configured to correspond to the socket 706 of the intermediate socket assembly 100. In this example the plug 605 has the same characteristic dimensions of a UK-style domestic electrical plug.

Use of the above components will now be described.

During a first fix an electrician follows the usual steps of disconnecting the mains electricity and running cables 12 to the specified apertures 14 in order to provide an outlet from the main supply. The pattress box 400 is fitted into the aperture and the required wires 13 are threaded into the pattress box. Conventionally, the electrician would at this point make the cables 12and wires 13 safe and leave in order for the plastering and any other structural or fitment work to be carried out. However, in the present case the electrician proceeds to fit the intermediate socket assembly 100.

The wires are inserted through the respective holes 501 in the intermediate socket assembly 100 and into their respective terminals 510, 511, 512. The intermediate socket assembly 100 can then be inserted into position within the pattress box 400. A screwdriver is used to tighten the screws of each of the terminals 510, 5 I I, 5I2such that the respective wires 13 are securely retained. The intermediate socket assembly 100 is secured to the pattress box 400 via the attachment means 502, 702.

At this point the wires 13 are all contained behind the intermediate socket assembly 100 and there arc no loose wires. The mains electricity can therefore be back on and the socket 706 of the intermediate socket assembly 100 can be used as a temporary electrical supply during any further works.

If work is to be carried out that may cause damage to the intermediate socket assembly 100, or otherwise impede its effectiveness, the cover plate 300 may be fitted at this point. Once completed the cover plate 300 is removed and the socket 706 can be used.

Once work is complete the front plate socket assembly 600 can be fitted. The plug 605 is inserted into the socket 706 and the front plate socket assembly 600 can then be secured to the intermediate socket assembly. This may be done with the use of conventional screws such as those used for fitting a normal socket into a pattress box.

Figures 13a and 13b show an alternative embodiment of the present invention. This embodiment shows an intermediate socket assembly 1100 comprising a busbar housing sub-assembly 1200 and an intermediate socket plate 1700. Additionally shown are a front socket assembly 1400, a cover 1300 and a front plate socket assembly 1600.

It can be appreciated that the components of the embodiment shown in Figures 13a and 13b differ substantially only in the width of components used. The socket assembly in this embodiment is configured to receive a single socketed front plate socket assembly 1600 and so is sized accordingly. All other features and components remain as described above in relation to previous embodiments. In a similar manner, it can be appreciated that larger socket assemblies may be used to allow use of larger front plate socket assemblies. Similarly, minor configurational changes may be made to account for regional variations in electrical power sockets used worldwide.

Figure 14 shows an exploded view of another embodiment of a socket assembly. As per the previous embodiments, a pattress box 2400 is a rearmost component and provides a structural connection to a wall (not shown) for the other components. An intermediate socket assembly 2100 comprises a housing subassembly 2200 and an intermediate socket plate 2700, which is shown attached to subassembly 2200. There is also provided: a cover plate 2400 and a front plate socket assembly 2600.

Figures 15a and 15b show the pattress box 2400 from a front and isometric view, respectively. The pattress box 2400 comprises a rear most portion 2460, which is arranged such that it can provide a first attachment point 2430 within the wall, preferably to a stud or other solid, structural component of the wall. The attachment point 2430 of the rear most portion 2600 comprises at least one hole 2411 through which a screw can inserted. Preferably a pair of holes 2411 are provided.

The pattress box 2400 further comprises four cutaways 2430 for allowing cables to pass through. Grommets/edge protection for the cutaways 2430 created by removing a knockout are provided to protect cables as the pass through, There are two tabs.

on either side cif the box 2400. These contain holes. through winch screws can be inserted to allow the front plate socket assembly 2600 to be attached directly to the box 2400. One of the tabs 2432 (right in the picture) is adjustable, allowing sinTinicin movement to permit levelling the front plate socket assembly 2600 bekre it is then secured into position. Ad.d.itionally, there is adjustable fixed noun 2434 located on the top, which also assists in levelling of the front plate socket assembly 2600 before it is finally secured into position An earthing point 2490 with a cable connection is also provided for earitinc the pattress box 2400 and providing an earth route 12w the other components of the socket assembly 2000.

Furthermore, two slots 2495 are provided to secure the intermediate socket assembly 2100 in place.

Figures I 6a and 16b show a prospective view of the front and back side of the intermediate socket assembly 2100. As shown in figure 16a intermediate socket plate 2700 comprises a socket 2706 that is adapted to received three pins that are aligned vertically, instead of a standard UK-style domestic electrical socket (although it can be appreciated that any arrangement may be used, preferably with one pin per electrical state of the pin, such as live, neutral and ground/earth). The intermediate socket plate 2700 comprises an integrated busbar subassembly 2200 comprising at least one aperture 2510. The aperture(s) 2510 are configured to allow a tool, such as a screwdriver, to pass through in order to access the terminals (not shown) of the busbars in a similar manner to that described above in relation to the busbar housing 500.

Figure 16b shows that the housing subassembly 2200 comprises a busbar housing 2500 haying two sets of three holes 2501 for inserting electrical wires into the subassembly 2200 to be secured through corresponding apertures 2510. Holes 2501 exists at the top and at the bottom of the busbar housing 2500 for ease of insertion.

Furthermore, tabs 2502 project out of the bottom of the housing subassembly 2200, allowing the subassembly 2200 to be inserted into the slots 2495 of the pattress box 2400 to secure the intermediate socket assembly 2100 in place.

Figure 17a and 17b show a prospective front and back side of the front plate socket assembly 2600, respectively. In the front plate socket assembly shown, there is further comprised an interchangeable second socket 2650. This second socket 2650 is configured to be removable from the front plate socket assembly 2600. The second socket 2650 shown comprises Universal Serial Bus (USB) connectors to enable powering of USB devices from the socket.

As noted, the second socket type 2650 is designed to be removable. This enables the user to change the port to a camera, USB port, smart speaker or other Internet of Things (TOT) device. It also allows a user to upgrade the second socket 2650 to newer protocols as electrical standards and power transmission protocols dictate and allow.

It can be appreciated that there is an increasing desire to utilize sockets to add functionality and USB Type C sockets as well as Wi-Fi boosting functionality and RJ45 connectivity could be provided. In an embodiment, the front plate socket assembly comprises one or more second sockets 2650, rather than standard plug sockets. This allows for modularity, with each second socket being modularly removable and selectable by the end user to suit the desired functionality for that socket location. For example, one second socket may comprise a standard plug socket, whilst another may comprise an arrangement of USB sockets. Later, if needs change, the standard plug socket may be replaced with a further second socket comprising further USB sockets, or a RJ45 connection, or the like.

Figure 17b shows a rear view of the front plate socket assembly, in this embodiment interconnect pins or prongs 2605 of the assembly are configured to engage with corresponding shaped apertures 2706 in an analogous manner to that described in relation to Figure 12b.

The present invention provides a socket that is easier for an electrician to install, with less time needed and reducing or eliminating the need for a second fix' by an electrician. Instead a standard builder or end user can easily add the front plate socket assembly 2600 into the intermediate socket assembly 2100. This also allows a user to easily exchange faulty front plate socket assemblies, or install upgraded versions without risk of exposure to the live electrical wiring, which is fully isolated from the front plate socket assembly.

Furthermore, it can be appreciated that this arrangement allows for an earth connection that runs from the pattress through to the front plate, with each intermediate plate being earthed, improving safety for the user.

From reading the present disclosure, other variations and modifications will be apparent to the skilled person. Such variations and modifications may involve equivalent and other features which are already known in the art of the electrical component installation, and which may be used instead of, or in addition to, features already described herein.

Although the appended claims are directed to particular combinations of features, it should be understood that the scope of the disclosure of the present invention also includes any novel feature or any novel combination of features disclosed herein either explicitly or implicitly or any generalisation thereof, whether or not it relates to the same invention as presently claimed in any claim and whether or not it mitigates any or all of the same technical problems as does the present invention Features which are described in the context of separate embodiments may also be provided in combination in a single embodiment. Conversely, various features which arc, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable sub-combination. The applicant hereby gives notice that new claims may be formulated to such features and/or combinations of such features during the prosecution of the present application or of any further application derived therefrom.

For the sake of completeness it is also stated that the term "comprising" does not exclude other elements or steps, the term "a" or "an" does not exclude a plurality, and reference signs in the claims shall not be construed as limiting the scope of the claims.

Claims

CLAIMS1. An intermediate socket assembly (100) for nstallation into a pattress box the intermediate socket assembly (100) comprising: a socket (706) configured to receive pins of a plug of a front plate socket assembly and to supply electrical power to the plug; and a busbar (504, 505, 506) in electrical communication with the socket (706), configured to be connected to the mains electricity supply.
2. An intermediate socket assembly (100) according to claim 1, further comprising securing means, the securing means configured to secure a front facing component to a front of the intermediate socket assembly.
3. An intermediate socket assembly (100) according to claim 2 wherein the front facing component is a cover plate.
4. An intermediate socket assembly (100) according to claim 2 wherein the front facing component is a front plate socket assembly.
-S. An intermediate socket assembly (100) according to any preceding claim wherein thc socket is configured to provide a connection to a mains electricity supply.
6. An intermediate socket assembly (100) according to any one of claims 2 to 5 wherein the securing means comprise releasable securing means.
7. An intermediate socket assembly (100) according to any preceding claim configured to sit sub-flush to a surface of a wall when fitted.
8. An intermediate socket assembly (100) according to any preceding claim configured to sit entirely within a pattress box when fitted.
9. An intermediate socket assembly (100) according to any preceding claim comprising indicia, wherein the indieia are located on a front face of the intermediate socket assembly.
10. An intermediate socket assembly (100) according to any preceding claim comprising front facing apertures configured to allow a tool to pass through to facilitate securing of wires of the electrical supply to terminals of the busbar.
11. An intermediate socket assembly (100) according to any preceding claim, wherein the socket assembly comprises an intermediate socket plate and a busbar housing subassembly.
12. An intermediate socket assembly (100) according to any preceding claim further comprising a safety gate, the safety gate configured to restrict access to the socket.
13. An electrical socket comprising the intermediate socket assembly (100) of any preceding claim and at least one of a pattress box (400) and a cover plate.
14. An electrical socket according to claim 13, wherein the pattress box comprises attachment points for coupling the intermediate socket assembly to the pattress box, said attachment points being located proximal to a back of the pattress box.
IS. An electrical socket according to claim 13, or claim 14. wherein the pattress box comprises an earthing point for connection to the intermediate socket assembly.
16. A front plate socket assembly for a domestic electrical supply, the front plate socket assembly comprising; plug pins, configured for insertion into a socket of an intermediate socket assembly; a socket configured to receive a consumer electrical plug.
17. A front plate socket assembly according to claim 15, further comprising securing means, the securing means configured to secure the front plate socket assembly to a front of an intermediate socket assembly.
18. A front plate socket assembly according to claim 15 or claim 16 comprising securing means for attaching to an intermediate socket assembly; and optionally or preferably wherein the securing means comprise releasable securing means.
19. A cover plate configured to be temporarily securable to an intermediate socket assembly according to any one of claims 1 to 12, so as to prevent detritus ingress into the intermediate socket assembly.
20. A cover plate according to claim 18 further comprising a raised rim on a front facing surface configured to provide a plastering bead when in use.
21. A socket assembly or kit of parts comprising the intermediate socket assembly of any one of claims I to 12 and the front plate socket assembly of any one of claims 16 to 18; and optionally or preferably, further comprising at least one of a cover plate according to claim 19 or 20 and a pattress box.