RU2833632C1 - Electrical housing for building structures and method of its installation during embedding - Google Patents

Abstract

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, in particular to wiring products, and can be used in monolithic and panel housing construction for installation of hidden electrical wiring in production of building structures. Electrical housing made of polyolefin group polymers composition contains hollow mounting box (1) with cover (2), locking spacer (3), magnetic plate box (5) and magnetic plate (6) with possibility of tight connection with magnetic plate box. Locking spacer is connected to the mounting box by means of protrusions installed in the mounting box holes, preventing connectors (7, 8) from falling out, which are placed in the mounting box slots. Magnetic plate box is connected to the locking spacer by installing the locking spacer projections into the magnetic plate box holes.

EFFECT: increased accuracy of installation of electrical housing during embedment in building structures during production of wall and ceiling panels.

7 cl, 11 dwg

Description

The group of inventions relates to the field of electrical engineering, in particular to electrical installation products, and can be used in monolithic and panel housing construction for the installation of hidden electrical wiring in the production of building structures.

To carry out hidden electrical wiring inside building structures (panels, slabs, etc.), it is necessary to carry out the process of monolithic embedding of plastic pipes in these structures, as well as electrical installation boxes intended for the subsequent installation of switches, sockets, and switches.

There are various designs of electrical installation boxes intended for the installation of hidden electrical wiring in the production of building structures.

The electrical installation box (patent RU 221304 U1, published 30.10.2021) consists of a housing with rear and front walls, cable entries. The cable entries are equipped with clamps designed to secure the box to the reinforcement frame by tying the cable entries with knitting wire. On the rear wall of the box housing there is a cable entry area for reliable hermetic fixation of the pipe and lugs for fastening the reinforcement bar.

The box (patent RU 2012967 C1, published 15.05.1994) is molded from foam plastic and consists of several parts connected by means of a spatial docking unit made in the form of a plug connection, in which a plug element is molded on one part of the box, and a socket on the other. In the middle of each docking unit there is a cylindrical hole, corrugated in the transverse direction, formed during docking by grooves in the elements of the unit. Each docking unit above one is designed as a separate additional insert, which forms the next hole in the box. An adjusting ring made of elastic material is installed between the surfaces of the elements. The box ends on both sides with tapering cones, and along the side surfaces between them, symmetrically to the longitudinal axis, there are two projections forming a groove between themselves. Before monolithing the box part into the building structure, the channel-forming pipe is pressed into the joint unit, and the box is inserted with its side grooves between the wire clamps in the reinforcement frame. After forming the building structure on the site, part of the box volume together with the pipe is removed, forming a nest in which wires and electrical installation products are mounted.

Patents CN 204858458 U (published 09.12.2015) and KR 20070101057 A (published 16.10.2007) describe distribution boxes that are installed during the production of building structures and are fixed using fasteners or reinforcing bars to prevent slipping when pouring concrete.

The electrical installation box for wall panels (patent RU 94075 U1, published 10.05.2010) is made of polymer material, has an oval, round or rectangular shape, consists of a body and a cover, connected to each other during installation. The box is fixed to the wall panel by fastening its body to the reinforcement using fasteners.

The main disadvantages of the above device designs are complicated installation, namely, fixing the box with various fasteners or knitting wire to the reinforcement frame. Installation takes a lot of time and does not allow for precise positioning of the installation boxes and connecting them into blocks of two or more. In addition, the surface quality of the resulting panels often requires additional finishing work (leveling).

In the manufacture of building structures with hidden electrical wiring, two methods are mainly used, one of which is to obtain hollow nests and channels using channel formers and nest formers. In the other method, pipes and boxes are monolithically embedded in the building structure during the manufacturing process, which are then opened and used for laying wires and installing electrical installation products.

According to patent RU 2109385 C1 (published 20.04.1998), a method is known for embedding plastic boxes and pipes in building panels for concealed electrical wiring, which includes the following operations: securing a metal, for example, cone-shaped retainer with its lower base on a horizontal pallet; installing a plastic box with one or more pipes inserted into it on the square head of the retainer, carried out through a square opening of the appropriate size in the bottom of the box up to the neck of the retainer, separating the square head of the retainer from its lower part; filling the form with mortar and subsequent molding of the panel with compaction of the mortar by vibration, after installing the box on the square head of the retainer, it is additionally secured by turning the box on the neck of the retainer around the vertical axis by 45°.

The disadvantage of this method is the complicated and unreliable fixation of the box during the process of forming building structures, which can lead to a shift in its position when pouring concrete, the labor intensity of the process, and the method does not allow for precise positioning of the installation boxes and connecting them into blocks of two or more. In addition, the method of fastening the metal retainer to the pallet (electric or gas welding) does not allow the same pallet to be used later if the location of the retainer needs to be changed.

The proposed group of inventions solves the technical problem of eliminating the indicated shortcomings.

The technical result of the group of inventions consists in increasing the accuracy of installation of the electrical installation housing during monolithic embedding in building structures during the production of wall and ceiling panels due to its design features, as well as in reducing time and labor costs.

In order to achieve the stated technical result, an electrical installation housing for building structures is proposed, made from a composition of polyolefin group polymers, containing a hollow installation box with a lid, which additionally contains a locking spacer, a magnetic plate box, and a magnetic plate with the possibility of serial connection.

Moreover, the mounting box has projections in the upper part with the possibility of installing fasteners, on the side surface of the box there are openings with grooves with the possibility of installing a pipe connector or a box connector in them, in the bottom of the box there is a groove in the center, and openings are made along the perimeter of the bottom.

The locking spacer is made in a square shape and has cylindrical projections at the corners in the upper and lower parts.

An additional lower spacer can be installed in the electrical installation housing. It is made in a square shape, has openings in the corners in the upper part, and cylindrical protrusions in the lower part.

The magnetic plastic box is round in shape and has cylindrical protrusions with holes on the bottom.

The magnetic plate includes a cover with a groove in the central part with the possibility of installing a magnet with a handle in it. The magnet and handle are equipped with a hole for the fastening element.

The diameter and number of holes on the bottom of the mounting box, the magnetic plate box and the top of the lower spacer correspond to the diameters and number of projections of the locking spacer and the lower spacer.

A method for installing an electrical installation housing during monolithic casting during the production of building structures, including assembling the electrical installation housing, installing the electrical installation housing on a metal form, connecting pipes, filling the form with mortar, characterized in that the electrical installation housing is installed on the metal form using a magnetic plate.

Fig.1 - Fig.10 show general views of the electrical installation housing and its individual structural elements in assembled and disassembled form, where:

1 - mounting box;

2 - cover;

3 - locking spacer;

4 - lower spacer;

5 - plastic box;

6 - magnetic plate;

7 - pipe connector;

8 - box connector;

9 - protrusion;

10 - hole;

11 - groove;

12 - hole;

13 - groove;

14 - protrusion;

15 - protrusion;

16 - cover;

17 - magnet;

18 - handle;

19 - fastening element.

The electrical installation housing (Fig. 1) contains a mounting box (1) (Fig. 3) which is tightly closed with a flat cover (2) (Fig. 4) to prevent the ingress of mortar when pouring into the mold. On four sides of the box (1) there are projections (9) with the possibility of installing fasteners and intended for additional fixation of the electrical installation housing. On the side surface of the box (1) there are openings (10) with grooves (11) for installing a pipe connector (7) (Fig. 5) or a box connector (8) (Fig. 6) in them. The pipe connector (7) simultaneously performs the function of a plug to prevent the ingress of mortar into the box (1), has a groove for cutting the edge. After cutting, it is possible to tightly attach a pipe made of low-pressure polyethylene (LDPE) with a diameter of 25 mm inside or tightly attach a pipe with a diameter of 32 mm from the outside. The box connector (8) is installed in the grooves (11) of two boxes (1) and allows them to be connected into a block of two or more. Moreover, when connecting into a block, the distance between the centers of the mounting boxes (1) is 71 mm, which allows sockets, switches and other electrical products to be installed into finished building structures.

Along the perimeter of the bottom of the box (1) there are holes (12) for installing a locking spacer (3), and in the central part of the bottom there is a groove (13), having cut through which a hook is installed in the box for use as a chandelier box.

The locking spacer (3) (Fig. 7) is made of a square shape, has projections (14) of a cylindrical shape at the corners in the upper and lower parts. Using the upper projections (14), the spacer (3) is tightly connected to the mounting box (1) by installing it in the openings (12), and at the same time it performs the function of a locking element for the pipe connector (7) or the box connector (8) inserted into the grooves (11), preventing them from falling out of the box when pouring mortar into the form.

The lower spacer (4) (Fig. 8) is made of a square shape, has openings (12) in the corners in the upper part, and cylindrical projections (14) in the lower part, by means of which it is connected to the locking spacer (3) and the magnetic plate box (5). The lower spacer (4) is designed to adjust the height of the electrical installation housing depending on the thickness of the manufactured building structure. The electrical installation housing is used to produce wall and ceiling panels of 3 types of thickness: 160, 180 and 200 mm. When producing panels 180 mm thick, a lower spacer of 20 mm height is used, When producing panels 200 mm thick, a lower spacer of 40 mm height is used.

The diameter and number of holes (12) on the bottom of the mounting box (1), the magnetic plate box (5) and the upper part of the lower spacer (4) correspond to the diameters of the projections (14) of the locking spacer (3) and the lower spacer (4).

The magnetic plate box (5) (Fig. 9) is made round, has cylindrical projections (15) with holes (12) on the bottom and is tightly closed with a magnetic plate (6). If it is necessary to install electrical installation products symmetrically on both sides of the building structure, the magnetic plate box (5) is replaced with an installation box (1).

The magnetic board (5) (Fig. 10) includes a cover (16) with a groove in the central part, into which a neodymium magnet (17) with a handle (18) is installed. The handle is made of a non-magnetic moisture-resistant material. The magnet (17) and the handle (18) are provided with an opening for the fastening element (19). The cover is subject to replacement after ten uses to ensure the necessary tightness of the magnetic board box. The magnet and the handle are intended for multiple use.

All elements of the case, except for the magnet (17) and the handle (18), are made from a polymer composition using the injection molding method. The corresponding molds are pre-made.

The electrical installation case is attached to the metal form using a magnetic plate, the magnets are integrated into the box covers and are intended for repeated use. After stripping, the magnetic plate remains on the metal form, additional finishing of the panels and cleaning of the forms is not required. The magnetic plate in the design of the electrical installation case eliminates its displacement when pouring the mortar and improves the quality of the resulting building structures.

The use of the installation method and the described design of the electrical installation housing using a magnetic plate ensures its precise positioning inside reinforced concrete building structures (wall and ceiling panels) and eliminates the labor-intensive and lengthy process of securing the installation boxes during monolithing using knitting wire or adhesive, and thus reduces the time spent on installing the electrical installation housing on the metal form and its subsequent cleaning and preparation for a new panel production cycle.

Examples of the implementation of the group of inventions:

Example 1

To produce a building structure in the form of a 160 mm thick reinforced concrete panel, a reinforcement frame is placed in a horizontal metal form. Then, two electrical installation housings are assembled in the following sequence.

Magnetic plates are assembled by installing a magnet with a handle in the cover groove and securing it with a screw and nut. The magnetic plate is tightly connected to the plate box. The mounting box is closed with a lid, four pipe connectors are installed in the grooves on the side surface of the mounting box, which also work as plugs. A locking spacer is installed in the holes on the bottom of the box, which is connected to the magnetic plate box using projections on the bottom.

The assembled electrical enclosures are installed using magnetic plates on a metal form in the required location. The edge of the pipe connectors is cut off and the pipes are connected in accordance with the working drawing of the electrical wiring and concrete is poured. After the concrete has hardened, the finished reinforced concrete panel is removed from the form, inside which the electrical enclosures with connecting pipes remain, and the magnetic plate remains on the metal form. The magnetic plates are removed from the metal form by the handle and sent for reuse. After stripping, additional finishing of the panels and cleaning of the forms is not required. Electrical cables are pushed into the connecting plastic tubes. After the panel is installed at the construction site, sockets and switches are installed in the finished boxes.

Example 2

To produce a building structure in the form of a 180 mm thick reinforced concrete panel, a reinforcement frame is placed in a horizontal metal form. Then, two electrical installation housings are assembled in the following sequence.

Magnetic plates are assembled by installing a magnet with a handle in the cover groove and securing it with a screw and nut. The magnetic plate is tightly connected to the plate box. The mounting box is closed with a lid, four pipe connectors are installed in the grooves on the side surface of the mounting box, which also work as plugs. A locking spacer is installed in the holes on the bottom of the box, which is connected with the lower spacer 20 mm high using the projections on the bottom, and then, using the projections on the bottom, it is connected to the magnetic plate box.

The assembled electrical enclosures are installed using magnetic plates on a metal form in the required location. The edge of the pipe connectors is cut off and the pipes are connected in accordance with the working drawing of the electrical wiring and concrete is poured. After the concrete has hardened, the finished reinforced concrete panel is removed from the form, inside which the electrical enclosures with connecting pipes remain, and the magnetic plate remains on the metal form. The magnetic plates are removed from the metal form by the handle and sent for reuse. After stripping, additional finishing of the panels and cleaning of the forms is not required. Electrical cables are pushed into the connecting plastic tubes. After the panel is installed at the construction site, sockets and switches are installed in the finished boxes.

Example 3

To produce a building structure in the form of a 200 mm thick reinforced concrete panel, a reinforcement frame is placed in a horizontal metal form. Then, two electrical installation housings are assembled in the following sequence.

Magnetic plates are assembled by installing a magnet with a handle in the cover groove and securing it with a screw and nut. The magnetic plate is tightly connected to the plate box. The mounting box is closed with a lid, four pipe connectors are installed in the grooves on the side surface of the mounting box, which also work as plugs. A locking spacer is installed in the holes on the bottom of the box, which is connected with the lower spacer 40 mm high using the projections on the bottom, and then, using the projections on the bottom, it is connected to the magnetic plate box.

The assembled electrical enclosures are installed using magnetic plates on a metal form in the required location. The edge of the pipe connectors is cut off and the pipes are connected in accordance with the working drawing of the electrical wiring and concrete is poured. After the concrete has hardened, the finished reinforced concrete panel is removed from the form, inside which the electrical enclosures with connecting pipes remain, and the magnetic plate remains on the metal form. The magnetic plates are removed from the metal form by the handle and sent for reuse. After stripping, additional finishing of the panels and cleaning of the forms is not required. Electrical cables are pushed into the connecting plastic tubes. After the panel is installed at the construction site, sockets and switches are installed in the finished boxes.

Example 4

To produce a building structure in the form of a 160 mm thick reinforced concrete panel with a block of three electrical installation housings, a reinforcement frame is placed in a horizontal metal form. Then, three electrical installation housings are assembled in the following sequence.

Magnetic plates are assembled by installing a magnet with a handle in the cover groove and securing it with a screw and nut. Magnetic plates are tightly connected to the plates' boxes. The mounting boxes are closed with covers, two pipe connectors and two box connectors are installed in opposite grooves on the side surface of one mounting box. Three pipe connectors are installed in the remaining two mounting boxes and connected to the first mounting box using box connectors, which are inserted into free grooves. Locking spacers are installed in the holes on the bottom of the boxes, which are connected to the magnetic plates' boxes using projections on the bottom.

The assembled block of three electrical installation housings is installed using magnetic plates on a metal form in the required place. The edge of the pipe connectors is cut off and the pipes are connected in accordance with the working drawing of the electrical wiring and concrete is poured. After the concrete has hardened, the finished reinforced concrete panel is removed from the form, inside which the electrical installation housings with connecting pipes remain, and the magnetic plate remains on the metal form. The magnetic plates are removed from the metal form by the handle and sent for reuse. After stripping, additional finishing of the panels and cleaning of the forms is not required. Electrical cables are pushed into the connecting plastic tubes. After the panel is installed at the construction site, a block of sockets is installed in the finished boxes.

Fig. 11 shows photos of industrial application of a group of inventions.

Claims (7)

1. An electrical installation housing for building structures, made from a composition of polyolefin polymers, containing a hollow mounting box with a lid, characterized in that it additionally contains a locking spacer connected to the mounting box by means of projections installed in the openings of the mounting box, preventing the connectors located in the grooves of the mounting box from falling out, a magnetic plate box connected to the locking spacer by installing projections of the locking spacer in the openings of the magnetic plate box, a magnetic plate with the possibility of tight connection with the magnetic plate box. 2. An electrical installation housing according to paragraph 1, characterized in that the mounting box has projections in the upper part with the possibility of installing fasteners, on the side surface of the box there are openings with grooves with the possibility of installing a pipe connector or a box connector in them, in the bottom of the box there is a groove in the center, and openings are made along the perimeter of the bottom. 3. An electrical installation housing according to paragraph 1, characterized in that the locking spacer is made in a square shape and has cylindrical projections at the corners in the upper and lower parts. 4. An electrical installation housing according to paragraph 1, characterized in that it additionally contains a lower spacer made in a square shape, has openings in the corners in the upper part, and cylindrical projections in the lower part. 5. An electrical installation housing according to item 1, characterized in that the magnetic plate box is made round and has four cylindrical protrusions with holes on the bottom. 6. An electrical installation housing according to item 1, characterized in that the magnetic plate includes a cover with a groove in the central part with the possibility of installing a magnet with a handle in it, the groove and the handle are provided with an opening for a fastening element. 7. An electrical installation housing according to paragraph 1, characterized in that the diameter and number of openings on the bottom of the mounting box, the magnetic plate box and the upper part of the lower spacer correspond to the diameters and number of projections of the locking spacer and the lower spacer.