4x4 to 4x2 Flush Mount Adapter

Description

/ 4 DESCRIPTIVE REPORT “4X4 TO 4X2 FLUSH MOUNT ADAPTER”

[001] This utility model describes a part that is intended to be adapted to the front of a 4x4” flush-mount box, transforming its front opening into a 4x2” flush-mount box opening, thus maintaining the internal space of the 4x4” flush-mount box and enabling the use of electrical or communication module sets and finishes, commonly used in 4x2” flush-mount boxes.

[002] The application of the “4x4 to 4x2 recessed box adapter” is done in a 4x4 recessed box before it is embedded in the wall, at electrical points and electrical circuit branches or communication points. For use in low-voltage electrical and communication installations in civil construction.

[003] The problem observed in 4x2 recessed boxes is that they have little internal space to accommodate the set of sockets and / or switches, their cable connections and circuit cables that branch off to other electrical points, which makes it difficult for the professional or impossible to close and properly finish the accessories such as sockets and switches.

[004] Also with the creation of the ABNT NBR 14136 standard, sockets have a new format that protects against direct contact, since their electrical contacts are recessed in relation to the surface, making the assembly deeper and occupying more space inside the 4x2 recessed box.

[005] Another problem observed when using a flush-mount box The 4x4 model has a very large front end for installations that only require one to three power outlet modules. Petition 870250012159, dated 02 / 14 / 2025, page 4 / 17 / 4 switches, making the necessary finishes less aesthetic and more expensive.

[006] In order to solve the problems mentioned above, the present utility model was developed, through which the following advantages are observed:

[007] To have a suitable shape to fit into different brands of 4x4 flush-mount boxes;

[008] Easy attachment of the adapter to the 4x4 flush-mount box, with the tightening of four screws in the front position, one screw on each of the four side tabs;

[009] Having cavities with divisions on the faces of the opening side at the front of the adapter to apply, accommodate and hold a sufficient layer of plaster around the 4x2 opening of the adapter (Fig. 10), for finishing the wall;

[010] Its positioning and shape do not interfere with the corrugated pipe outlets inside the 4x4 recessed box;

[011] The solution found was to design an adapter that, when installed in the 4x4 recessed box (Fig. 5)(2), transforms the 4x4 opening at the front into a 4x2 opening (Fig. 7), making it possible to use sets and finishes of one to three modules of sockets, switches, telephone, communication and / or wireless automation devices, while maintaining the internal space of the 4x4 box (Fig. 9), to better accommodate the cables that branch off from electrical circuits to other points, the connections, the installation and the modular sets of electrical and communication equipment. Offering a new option for construction.

[012] For a better understanding of the attached drawings, the following list is provided:

[013] Figure 1 represents the isometric perspective view of the 4x4 to 4x2 flush-mount box adapter.

[014] Figure 2 represents the front view of the adapter. Petition 870250012159, dated 02 / 14 / 2025, page 5 / 17 / 4

[015] Figure 3 represents the right side view of the adapter.

[016] Figure 4 represents the top view of the adapter.

[017] Figure 5 represents the isometric perspective view of the adapter positioned to be housed in a 4x4 flush-mount box.

[018] Figure 6 represents the isometric perspective view of the adapter, already housed inside the 4x4 box, and the location where the four screws will be screwed in clockwise to fix the adapter to the box.

[019] Figure 7 represents the isometric perspective view of the adapter screwed into the 4x4 recessed box, showing the assembled unit ready to be recessed and bolted into the wall.

[020] Figure 8 represents a top cutaway view of a box. 4x2 recessed into the wall, highlighting the limited internal space for cables branching off to other points and circuits, connections, and the set of sockets or other components, as well as its opening at the front for a set of one to three electrical or communication modules.

[021] Figure 9 represents the top cutaway view of the adapter installed in a 4x4 box embedded in the wall, highlighting the internal space acquired for cables branching off to other points and circuits, the connections and the set of sockets or others, and also its opening at the front for a set of one to three electrical or communication modules.

[022] Figure 10 represents the isometric perspective view of the assembly, 4x4 to 4x2 recessed box adapter and the 4x4 recessed box, recessed and ready in the wall.

[023] The present utility model refers to a piece of plastic polymer (Fig. 1), in the form of a square lid (4x4) with reliefs, in the center there is a rectangular protrusion with a 4x2 opening inside, and inside this rectangular opening on the inner walls there are six tabs with a through hole in each, distributed in two lateral tabs and one central tab on the upper wall and two lateral tabs and one Petition 870250012159, dated 02 / 14 / 2025, page 6 / 17 / 4 central on the lower wall, with the four side tabs for fixing with screws to the 4x4 recessed box and the two central tabs for screwing the modular electrical or communication assembly, on the side faces between the edges of the adapter and the protrusion of the central 4x2 opening there are cavities with divisions for application, accommodation and support of the finishing compound, the edges of these divisions form a radius up to half of the central protrusion creating a reinforcement to prevent warping of the piece. The 4x4 to 4x2 recessed box adapter (Fig. 5)(1) is fixed to the 4x4 recessed box (Fig. 5)(2) before being recessed into the wall, the adapter is fitted into the opening in front of the 4x4 box and fixed by means of four screws (Fig.6)(3), a screw in each tab, passing first through the four upper and lower side tabs of the adapter and fixing itself to the four tabs of the 4x4 box, adapting its opening in the front 4x4 into a 4x2 (Fig.7), while maintaining the internal space of a 4x4 box, to be used where more internal space is needed to accommodate cables branching off from electrical circuits to other points, cable connections, installation and assembly of one to three modules of electrical outlets, light switches, doorbells, telephone, communication or home and commercial automation devices via wireless, with a size and shape suitable for 4x4” recessed boxes of various brands, the adapter has cavities on the front faces with divisions to apply, accommodate and support a sufficient layer of plaster around the 4x2 opening of the adapter for wall finishing, the edges of these divisions form a radius up to the middle of the central protrusion creating a reinforcement to prevent warping of the piece, the two central tabs, one upper and one lower of the adapter are for fixing by means of screws the assembly of one to three electrical or communication modules. Petition 870250012159, dated 02 / 14 / 2025, p. 7 / 17

Claims

CLAIM “4X4 TO 4X2 FLUSH MOUNT ADAPTER” 1 - Refers to a part that functions as an adapter (Fig. 1) that is fitted and screwed into a 4x4” flush-mount box (Fig. 5)(2) before being flush-mounted and bolted to the wall, adapting the opening on the front of the 4x4 flush-mount box into a 4x2 opening, enabling the installation of a set of one to three electrical or communication modules, while maintaining the internal space of the 4x4 flush-mount box, characterized by a piece of plastic polymer (Fig.1) In the form of a square (4x4) cover with reliefs, in the center there is a rectangular protrusion with a 4x2 opening cut out inside, and inside this rectangular opening on the inner walls there are six tabs with a through hole in each, distributed as follows: on the upper wall, two lateral tabs and one central tab, and on the lower wall, also two lateral tabs and one central tab. The four lateral tabs are for fixing to the 4x4 recessed box with screws, and the two central tabs are for screwing the modular electrical or communication assembly. On the lateral faces, between the edges of the adapter and the protrusion of the central 4x2 opening, there are cavities with divisions for applying, accommodating, and supporting the finishing compound. The edges of these divisions form a radius up to the middle of the central protrusion, creating a reinforcement to prevent warping of the piece. Petition 870250012159, dated 02 / 14 / 2025, page 8 / 17

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