RU203543U1 - Electrical installation box - Google Patents

Abstract

The utility model relates to the field of electrical engineering and is intended for the installation of wiring accessories in hollow walls. The electrical installation box contains a body (1) with the shape of a glass and at least two presser feet (2). In the side walls of the housing, at least two diametrically opposite first longitudinal holes (6) are made, in which threaded fasteners (7) are displaced. In this case, at least two guides (12) are made in the form of profile cutouts on the outer side surface of the housing (1). In the lower part of the housing (1), at least two recesses (13) are made, which are in communication with the guides (12). The presser feet (2) are mounted for axial movement in the guides (12) by rotating the threaded fasteners (7), and in the initial position the presser feet (2) are located in the recesses (13). Simplification of installation is achieved due to the fact that the lower edge (3) of the surface of the base of the body (1) is rounded; two pairs of ribs (11) are made on the body (1) from the inner side of the end to protect the body (1) from axial rotations; each presser foot (2) contains a cylindrical part (16) and a boss (17), which are connected by a flat horizontal plate (18) and a vertical bridge (19), while threaded fasteners (7) are placed in the holes of the cylindrical part (16), which are fixed by the bosses (17) in the grooves (15) of the L-shaped protrusion (14) with the possibility of rotation by 90 ° in the horizontal plane from the initial position. 5 ill.

Description

The technical solution relates to the field of electrical engineering and is intended for the installation of wiring accessories (sockets, switches, control devices, etc.) in hollow walls.

Known, for example, an electrical box (socket) (RU 169542 U1, 03/22/2017, [1]), made in the form of a cylindrical body with breakable elements inside.

Stiffening ribs are made on the upper inner surface of the box. There is a hole at the bottom of the box, closed by an easily punctured or easily removable membrane. The axis of the specified hole coincides with the axis of symmetry of the wiring box body.

Also known is a fastening device for electrical distribution devices for hidden wiring built into openings in a hollow wall (RU 184272U1, 22.10.2018, [2]), comprising a housing that has a completely closed internal volume. Screws are placed in the through holes of the housing. In the side walls of the housing, guides are made, which are shaped cutouts. The mounting tabs are fixed in the guides.

In the analogue [2], the fixing foot is fixed in the guides using cylindrical bosses or rectangular spikes. In the final position, the fixing lugs are recessed into a groove in the bottom of the device body. When the screw rotates, the fixing tab rotates 90 ° into the working position, leaving the groove in the bottom of the case, and then rises along the guides in the case until it rests against the opposite side of the hollow wall, fixing the box.

The specified analogue [2] is by the totality of essential features the closest analogue of the same purpose to the claimed technical solution. Therefore, it is accepted as a prototype.

A technical problem, the solution of which is provided by the implementation or use of a technical solution, is the need to expand the types of structures for electrical boxes.

The design of the analogue [1] does not provide for holding the casing in the hollow wall during installation. Therefore, the socket outlet [1] can only be used for solid walls.

In the prototype [2], when the screw rotates, the fixing foot is rotated 90 ° in the vertical plane. This leads to jamming. In addition, when the screw is turned backwards (counterclockwise), the lugs will fall out.

The technical result of the proposed technical solution is to simplify the installation of the electrical installation box.

The technical result is achieved in that the electrical installation box contains a body with the shape of a glass and at least two presser feet. In this case, at least two diametrically opposite first longitudinal holes are made in the side walls of the housing, in which threaded fasteners are displaced. In this case, at least two guides in the form of profile cutouts are made on the outer side surface of the housing. Moreover, at least two recesses are made in the lower part of the housing, which are in communication with the guides. In this case, the presser feet are installed with the possibility of axial movement in the guides by means of rotation of the threaded fasteners, and in the initial position, the presser feet are located in the recesses. Differs in that:

- the lower edge of the body base surface is rounded;

- two pairs of ribs are made on the body from the inner side of the end to protect the body from axial rotations;

- each presser foot contains a cylindrical part and a boss, which are connected by a flat horizontal plate and a vertical bridge, while threaded fasteners are located in the holes of the cylindrical part of the foot, and the fastening legs are fixed by bosses in the grooves of the L-shaped protrusion with the possibility of rotation by 90 ° in the horizontal plane from the starting position.

The aforementioned combination of essential features of the claimed technical solution ensures the achievement of the claimed technical result.

The author of the claimed technical solution made a prototype of this solution, the tests of which confirmed the achievement of the technical result.

Brief description of the drawings.

FIG. 1 shows a general view of the wiring box (presser feet in the lower position); in fig. 2 - wiring box body; in fig. 3 - presser foot; in fig. 4 - electrical box (presser feet extended); in fig. 5 - electrical box (presser feet in the upper position).

The electrical installation box (Fig. 1) contains a housing (1) and at least two presser feet (2).

The body (1) (Fig. 2) has the shape of a glass and is made of plastic, preferably polystyrene. Standard body dimensions (1) are:

D = 68 mm, where D is the body diameter (1);

H = 45 mm, where H is the body height (1).

The lower edge (3) of the surface of the housing base (1) is rounded to facilitate insertion of the installation box into the mounting hole.

The housing (1) has four entries (4) for routing electrical cables. Each inlet (4) consists of a combined hole in the base of the body (1) and a hole in the side wall of the body (1). Plugs (5), made, for example, of plastic compound, are installed in the inlet holes (4). Plugs (5) can be made with break-out

In the side walls of the housing (1), at least two first longitudinal holes (6) are made, located diametrically opposite. In the first longitudinal holes (6) threaded fasteners (7), preferably self-tapping screws, are displaceable.

In addition, two rows of second longitudinal holes (8) are made in the side walls of the housing (1) for fastening, adjusting and installing wiring products. Moreover, each row contains three second longitudinal holes (8). In this case, the rows of second holes (8) are located diametrically opposite and are offset by 90 ° relative to the first longitudinal holes (6).

The end of the body (1) contains petals (9), due to which the diameter of the bearing surface is increased to 78 mm. On the end face there are two notches (10) intended for marking holes with a distance of 71 mm for multi-post mounting. Two pairs of ribs (11) are made on the body (1) from the inner side of the end face to protect the body (1) from axial rotations. The pairs of ribs (11) are located diametrically opposite.

On the outer side surface of the housing (1), at least two guides (12) and at least two recesses (13) are made.

The guides (12) are made in the form of profile cutouts.

The recesses (13) are made in the lower part of the body (1) and communicate with the guides (12). Each recess (13) has an L-shaped protrusion (14) containing a groove (15).

The presser feet (2) (Fig. 3) are designed to hold the body (1) in the hollow wall. The wall can be made of panel or hollow bricks.

Each presser foot (2) contains a cylindrical part (16) and a boss (17), which are connected by a flat horizontal plate (18) and a vertical bridge (19). A threaded fastener (7) is located in the hole of the cylindrical part (16).

In the initial position, the presser feet (2) are located in the recesses (13) of the body (1). In this case, the presser feet (2) are fixed by the bosses (17) in the grooves (15) of the L-shaped protrusion (14) with the possibility of rotation by 90 ° in the horizontal plane from the initial position. The presser feet (2) are mounted with the possibility of axial movement in the guides (12) by means of the rotation of the threaded fasteners (7). The travel of the presser foot (2) for a standard mounting box is 6.5 to 35 mm.

In contrast to the prototype [2], the rotation of the presser feet (2) in the horizontal plane is provided, which prevents them from falling out.

In working position, the presser feet (2) are fixed to the back of the hollow wall.

The implementation of the proposed technical solution is not limited to the above example.

The order of use .

A hole is cut in the wall for an electrical installation box. The hole is cut, preferably with a drill with a special crown. After that, the wiring box is installed in the aforementioned hole. Break out the plugs (5) of the inlet holes (4) and pull the cables through the inlet holes (4). Then the presser feet (2) are tightened with the fasteners (7). In this case, the bosses (17) of the presser feet (2) are rotated 90 ° in the horizontal plane from the initial position and come out of the grooves (15) (Fig. 4). The presser feet (2) move axially in the guides (12) to the upper position (Fig. 5), and abut with the horizontal plates (18) against the wall surface from the back side.

The claimed technical solution is implemented using commercially available devices and materials, can be manufactured at any electrical enterprise and will be widely used to protect cable core connections from external influences, to create a long-term, safe and controlled installation of wiring, telephone joints, sockets, switches, regulators illumination and communication devices.

Claims (1)

An electrical installation box containing a body shaped like a glass and at least two presser feet, while at least two diametrically opposite first longitudinal holes are made in the side walls of the body, in which threaded fasteners are movable, while on the outer the side surface of the housing is made of at least two guides in the form of profile cutouts, and in the lower part of the housing there are at least two recesses, which are in communication with the guides, while the presser feet are installed with the possibility of axial movement in the guides by rotating the threaded fasteners, and the initial position of the presser feet are located in the recesses, characterized in that the lower edge of the surface of the base of the body is rounded; two pairs of ribs are made on the body on the inner side of the end to protect the body from axial rotations; each presser foot contains a cylindrical part and a boss, which are connected by a flat horizontal plate and a vertical bridge, while threaded fasteners are placed in the holes of the cylindrical part of the foot, and the fastening legs are fixed by bosses in the grooves of the L-shaped protrusion with the possibility of 90 ° rotation in the horizontal plane from the starting position.

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