RU206730U1 - Electrical installation box - Google Patents

Abstract

The technical solution is intended for the installation of wiring products in hollow walls and contains a housing (1), in the guides (21) of which presser feet (2) are installed with the possibility of axial movement by rotating the threaded fasteners (16). The body (1) has two first larger holes (7), which are located diametrically opposite and provided in the side walls with the first round membranes for breaking out (8). Installation is simplified due to the fact that two second smaller holes (10) are made in the body (1), located diametrically opposite and equipped with second round membranes for breaking out (11) in the side walls and second bridges (12) at the base. The invention simplifies the installation of an electrical installation box. 7 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.

It is known, for example, an electrical distribution device (RU 103246 U1, 03/27/2011, [1]) containing a first cylindrical body and a means of attachment to another body. Side holes are made in the wall of the case for distributing wires / cables. The means for attaching to another body is made in the form of a U-shaped protrusion, hollow and located outside this body. In this case, the U-shaped protrusion of one body is configured to be located in the U-shaped groove of the other body. Outside, the U-shaped protrusion from its lateral sides parallel to the longitudinal axis of the body is provided with two ribs.

Also known is a fastening device for electrical distribution devices for hidden wiring built into openings in a hollow wall (RU 184272 U1, 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 body there are guides, which are profile cutouts. The mounting tabs are fixed in the guides. At the base of the body there are two pairs of annular coaxial slots that separate the baffles for breaking out. Round holes are made in the side walls of the housing, provided in the side walls with the first round membranes for breaking out.

In 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 when implementing or using a technical solution, is the need to expand the types of structures of 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 analogue [2], when the screw is rotated, 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. In addition, the analogue [2] has sharp edges of the base and the size of the slots in the base is unknown.

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

The technical result is achieved in that the electrical installation box contains a body shaped like a glass and at least two presser feet. In this case, two first larger openings are made in the body, located diametrically opposite and provided in the side walls with first round membranes for breaking out. Moreover, at least two diametrically opposite first longitudinal holes are made in the side walls of the housing, in which threaded fasteners are movable. 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. Moreover, in the initial position, the presser feet are located in the grooves.

The body has two second smaller holes, located diametrically opposite and provided in the side walls with second circular membranes for breaking out and at the base with second bridges;

- each first hole is located at an angle α = 30 - 34 ° relative to the base axis, while each second hole is located at an angle β = 46 - 50 ° relative to the base axis;

- 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;

- in each recess there is an L-shaped protrusion containing a groove;

- 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 above set of essential features of the claimed technical solution ensures the achievement of the claimed technical result.

The author of the claimed technical solution has made a prototype of this solution, the tests of which have confirmed the achievement of the technical result in the above ranges of angles.

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 is a top view of the wiring box body; in fig. 4 - connecting channel; in fig. 5 - presser foot; in fig. 6 - electrical box (presser feet extended); in fig. 7 - 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 (4) of the surface of the housing base (1) is rounded to facilitate insertion of the installation box into the mounting hole.

At the base of the body (1), two pairs of annular coaxial slots (5) with diameters of 10 mm and 20 mm are made, which separate the partitions for breaking out (6). The size of each slot (5), taking into account the maximum deviations, is 0.5 mm. This size increases the sound insulation of the enclosure and reduces the ingress of dust into it. FIG. 4 shows the connecting channel (3).

The body (1) contains:

- the first two holes (7) of a larger size, located diametrically opposite and equipped in the side walls with the first round membranes for breaking out (8) and at the base with the first bridges (9);

- two second holes (10) of a smaller size, located diametrically opposite and provided in the side walls with second circular membranes for breaking out (11) and at the base with second bridges (12);

- two inlet holes (13), located diametrically opposite and closed by third membranes for breaking out (14).

The first round breakout membranes (8) have a diameter of 20 mm, the second round breakout membranes (11) have a diameter of 16 mm.

The first and second holes (7, 10) are for the distribution of wires / cables. Each first hole (7) is located at an angle α = 32 ° relative to the axis of the base (Fig. 3). In this case, every second hole (10) is located at an angle β = 48 ° relative to the base axis. This arrangement of the first and second holes (7, 10) increases the convenience of distributing wires and, accordingly, installation.

The inlet openings (13) are designed to install the connecting channel (3) (Fig. 4) for combining installation wiring boxes into groups.

In the side walls of the housing (1), at least two first longitudinal holes (15) are made, located diametrically opposite. In the first longitudinal holes (15) are displaceable threaded fasteners (16), preferably self-tapping screws.

In addition, in the side walls of the housing (1), two rows of second longitudinal holes (17) are made, intended for fastening, adjusting and installing wiring products. Moreover, each row contains three second longitudinal holes (17). In this case, the rows of second holes (17) are located diametrically opposite and offset by 90 ° relative to the first longitudinal holes (15).

The end of the body (1) contains petals (18), due to which the diameter of the bearing surface is increased to 78 mm. On the end face there are two notches (19) intended for marking holes with a distance of 71 mm for multi-post mounting. Two pairs of ribs (20) are made on the body (1) from the inner side of the end to protect the body (1) from axial rotations. The pairs of ribs (20) are located diametrically opposite (not shown).

On the outer side surface of the housing (1), at least two guides (21) and at least two recesses (22) are made.

The guides (21) are made in the form of profile cutouts.

The recesses (22) are made in the lower part of the body (1) and communicate with the guides (21). Each recess (22) has an L-shaped protrusion (23) containing a groove (24).

The presser feet (2) (fig. 5) 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 (25) and a boss (26), which are connected by a flat horizontal plate (27) and a vertical bridge (28). A threaded fastener (16) is located in the hole of the cylindrical part (25).

In the initial position, the presser feet (2) are located in the recesses (22) of the body (1). In this case, the presser feet (2) are fixed by the bosses (26) in the grooves (24) of the L-shaped protrusion (23) with the possibility of rotation by 90 ° in the horizontal plane from the initial position. The presser feet (2) are mounted for axial movement in the guides (21) by rotating the threaded fasteners (16). The travel of the presser foot (2) for a standard mounting box is 6.5 to 35 mm.

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.

A hole is cut out 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 breakout partitions (6) and pull the cables through the holes formed. Then the fasteners (16) tighten the presser feet (2). In this case, the bosses (26) of the presser feet (2) are rotated 90 ° in the horizontal plane from their original position and come out of the grooves (24). The presser feet (2) move axially in the guides (21) and abut with the horizontal plates (27) 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 having the shape of a glass and at least two presser feet, while the body has two first larger holes located diametrically opposite and provided in the side walls with first round membranes for breaking out, and in the side walls of the body are made according to at least two diametrically opposite first longitudinal holes, in which threaded fasteners are arranged for movement, while at least two guides in the form of profile cutouts are made on the outer side surface of the housing, and at least two grooves are made in the lower part of the housing, which communicated with the guides, while the presser feet are installed with the possibility of axial movement in the guides by rotating the threaded fasteners, and in the initial position the presser feet are located in the recesses, characterized in that two second holes are made in the body the smallest, located diametrically opposite and provided in the side walls with second round membranes for breaking out and at the base with second bridges; each first hole is located at an angle α = 32 ° relative to the axis of the base, while each second hole is located at an angle β = 48 ° relative to the axis of the base; the lower edge of the surface of the base of the housing 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 recess has an L-shaped protrusion containing a groove; 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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