RU221304U9 - ELECTRICAL INSTALLATION BOX - Google Patents

Abstract

The utility model is intended for laying cables or wiring power lines and is used in monolithic and panel housing construction. It is used in the production of building structures with hidden electrical wiring and is intended for installation of electrical wiring in building structures. The electrical installation box 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 binding wire. On the back wall of the box body there is a cable entry area for reliable hermetically sealed fixation of the pipe and bosses for fastening the reinforcing rod. The advantage of the proposed design of the electrical installation box is: a reduction in the consumption of reinforcement, due to the elimination of the need to manufacture a special “crab” from the reinforcement, the fastening of the electrical box to the main reinforcement frame is simplified, casting materials do not flow inside the box during the process of embedding it inside the building structure, opening is easier boxes for installation of electrical wiring; when fixing the box to the reinforcement frame, slipping of the binding wire is prevented.

Description

The utility model is intended for laying cables or wiring power lines and is used in construction. It is used in the production of building structures with hidden electrical wiring and is intended for installation of electrical wiring in building structures.

A branching box [1] is known, containing a housing divided into two unequal cavities by a partition installed in the guides. The case contains windows for electrical wires, sets of electrical installation products and a cover. The partition is made in the form of a strip freely inserted into the guides of the housing with cutouts in the lower part and shelves placed above them in a smaller cavity, on which a set of electrical installation products for connecting communications and alarm systems is mounted. The cover has two holes located diagonally for separate power supply to the current collectors of power and lighting equipment, and communication and signaling devices. The box is sealed using rubber gaskets. The windows of the boxes that are not used for laying wires are closed with plugs.

The disadvantage is that:

1. in the process of embedding the box into a building structure, casting materials (cement mortar, etc.) can penetrate into the box if the gaskets are installed poorly, which leads to rejection of the entire product and additional significant costs for eliminating defects;

2. the binding wire slips when it is fixed to the reinforcement frame;

3. to secure the box, a large amount of reinforcing steel is consumed - for the manufacture of the “crab”, knitting wire and labor;

4. it is necessary to carry out additional operations for the production of “crab” blanks and tying with knitting wire;

5. It is difficult and dangerous to open boxes when installing electrical wiring;

6. the need to additionally use plugs, plugs, gaskets, pipes;

7. The structure is prefabricated.

Similar in technical component is the electrical box L245.001 [2], which includes a housing, rear and front walls, cable entry and cover.

The disadvantage is that:

1. in the process of embedding the box into the building structure, casting materials (cement mortar, etc.) penetrate into the box, which leads to rejection of the entire product and additional significant costs for eliminating defects;

2. the binding wire slips when tying the box and fixing it to the reinforcement frame;

3. there is a large consumption of material (reinforcing steel);

4. it is necessary to carry out additional operations for the production of “crab” blanks and tying with knitting wire;

5. difficulty arises in bending reinforcing steel (additional devices are required);

6. It is difficult to open the box when installing electrical wiring;

7. it is necessary to manufacture a clamp from reinforcing bars, which requires welding;

8. The structure is prefabricated.

The technical result of the utility model is to increase the reliability of fixing the box to the reinforcement frame, which is achieved due to the fact that the cable entries have clamps designed to fasten the box to the reinforcement frame by tying the cable entries with binding wire; on the back wall of the box body there are bosses for fastening reinforcing rod, the body is equipped with grooves to prevent the binding wire from slipping.

The inventive design is shown in Fig. 1 and fig. 2.

The electrical installation box consists of a housing (1) with rear (2) and front (3) walls, cable entries (4). The cable entries are equipped with clamps (5) intended for fastening the box to the reinforcement frame by tying the cable entries with binding wire. There is a groove (6) on the front wall of the box body to fix the knife blade and facilitate opening the box after embedding. On the rear wall of the box body there is a cable entry area (7) for reliable hermetically sealed fixation of pipes and bosses (8) for fastening the reinforcing rod.

The inventive design works as follows: the electrical installation box is secured to the reinforcing frame with a reinforcing rod by piercing or drilling through the bosses on the rear wall of the housing with the rod, then the ends of this rod are attached to the main reinforcing frame. The box is securely fixed to the cable entries through clamps with binding wire, due to which it does not move, the amount of binding wire used is reduced and the number of production operations is reduced. After embedding the front wall of the case, to facilitate opening the box, open it along the groove and lay the cables, after which the lid is closed.

Reliable fixation of the box to the reinforcement frame prevents its movement under shock loads from the concrete mixture falling from a height of more than three meters (with a specific density of concrete of 2.5 kg/dm3), which prevents its breaking and falling, as well as the formation of the slightest gaps in connection of the box and supply polyethylene pipes, which is an important difference, because the pressure of the concrete mixture reaches 0.75 kg/cm2. At this pressure, there is a high probability of cement laitance flowing through the slightest leaks and gaps, between pipes and holes in the box.

Thus, the advantage in the proposed design of the electrical installation box is:

1. reducing the consumption of reinforcement (reinforcing bars pass through the tides);

2. it simplifies the attachment of the electrical box to the main reinforcement frame;

3. casting materials (cement mortar, etc.) do not flow inside the box during the process of embedding it inside the building structure;

4. It is easier to open the box when installing electrical wiring;

5. when fixing the box to the reinforcement frame, the binding wire cannot slip off the body due to the presence of grooves;

6. The cable entries have clamps for reliable fastening of the binding wire;

7. tightness and reliability are increased due to the fact that the entire structure is solid;

8. the ability to use various electrical insulating materials with the required physical and mechanical properties in the manufacture of the box, depending on the requirements;

9. Thanks to the above points, the cost of the product is reduced and competitiveness increases.

Literature sources:

1. Pat. 470031 USSR, M. Kl. H02g 3/08. Branching box / Veprinsky A.D., Privalov V.G., Pogorelskaya M.S., Kukushkin N.G. // Publ. 08/13/1975. - Bull. No. 17;

2. Technical specifications TU 17-40-949-88 “Fixed-in plastic boxes”. - Ministry of Light Industry of the USSR.

Claims (1)

Electrical installation box, including a housing and a cable entry, characterized in that the cable entries are equipped with clamps intended for fastening the box to the reinforcement frame by tying the cable entries with binding wire; on the rear wall of the box body there are lugs for fastening the reinforcing bar; the housing is equipped with grooves , preventing the binding wire from slipping.

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