RU207221U1 - MOUNTING BOX - Google Patents

Abstract

This utility model relates to wiring products. The proposed mounting box for surface mounting, containing: a housing with a base, side walls and sealing elements made of elastic-elastic material, and a cover; wherein said sealing elements include: at least two piercing membranes located in the base of the body, made with the possibility of ensuring tightness after installing the fasteners, membrane piercing elements made in the side walls of the body, having a plate-like central part and a peripheral part in the form of connected along the ends of concentric rings, a sealing element located in the upper part of the side walls of the body along the entire perimeter so as to ensure a hermetic abutment of the above-mentioned cover to the body, characterized in that said elastic-elastic elements are formed therein by molding an elastic-elastic material into a mold, containing the body blank.

Description

LEVEL OF TECHNOLOGY

This utility model relates to wiring products.

Known surface-mounted junction boxes manufactured by ABB (https://search.abb.com/library/Download.aspx? DocumentID = lSPC801233L0201 & LanguageCo de = en & DocumentPartId = & Action = Launch) having a housing and a cover, in which the side surface of the housing is equipped with stuffing box seals for cable entry or corrugated pipe and ensuring the level of protection IP55 and IP65.

Known mounting boxes for surface mounting produced by LeGrand (https://e-catalogue.legrand.ru/catalog/elektrooborudovanie-spetsialnogo-naznacheniya/seriya-plexo/korobki-vlagozashchishchennye-s-zamkom-l-4-oborota/092032 ) providing a level of protection IP55, having a housing and a cover, in which the side surface of the housing is equipped with gland seals for entering cables or corrugated pipes, while the cover is equipped with a relief seal for sealing.

A common disadvantage of the known solutions is that all the elements of the box are made of the same material, as a rule, very rigid and inelastic, which does not allow sufficiently precise cutting of the holes for the pipes to be connected to ensure their tightness without the use of additional means. Or, if the box is made of different materials, in particular, the sealing elements are made of rubber or similar materials, such elements are separate parts, for the assembly of which with the body many assembly operations are required. In addition, if the sealing elements are separate parts, their joints with the body make an additional contribution to the leakage due to the existing deviations of the shape of the body itself and the cast rubber parts from the design.

USEFUL MODEL DISCLOSURE

The objective of the present utility model is to create a surface-mounted mounting box that is free from the above-mentioned disadvantages.

The technical result of the utility model is that due to the fact that the sealing elements are cast in molds with housing blanks placed in them, the number of assembly operations is reduced and a completely hermetic adjoining of the sealing elements themselves to the housing blank is ensured and, as a consequence, the tightness of the finished product increases.

The above problem is solved due to the fact that the junction box for surface mounting contains:

a housing having a base, side walls and sealing elements made of resiliently elastic material and a cover;

wherein said sealing elements include:

at least two piercing membranes located in the base of the body, made with the possibility of ensuring tightness after installing the fasteners, membrane piercing elements made in the side walls of the body, having a lamellar central part and a peripheral part in the form of concentric rings connected at the ends,

a sealing element located in the upper part of the side walls of the housing along the entire perimeter in such a way as to ensure a hermetic abutment of the above-mentioned cover to the housing,

characterized in that in it said body and elastic-elastic elements, namely, said piercing membranes, elastic membrane piercing elements and a sealant, are made of different materials, while said elastic-elastic elements are formed by casting an elastic-elastic material into a form containing a body blank.

The junction box is designed for branching wires and cables, for hiding and additional protection of switching points.

Mainly, junction boxes are used as an integral part of electrical drainage systems, consisting of cable ducts.

Due to the fact that the sealing elements are located in all places that involve a through hole in the body (the joint between the lid and the body, the location of the fasteners, the places where cables and pipes are inserted in the side walls), it is possible to completely eliminate the negative effect of moisture on the contents of the box.

The central part of the said membrane elements provides a hermetically sealed connection of cables of small cross-section.

The peripheral part of the said membrane elements provides a hermetic abutment of large diameter tubes.

As will be understood by a person skilled in the art, the problem is solved due to the entire set of features of the above-described box, while the above-mentioned technical result is achieved mainly by the fact that the said elastic-elastic elements, namely, the mentioned piercing membranes, are elastic membrane piercing elements and a sealant are formed in one step without additional assembly operations by casting an elastic-elastic material into a mold containing a body blank. At the same time, taking into account the ideal filling of the form and subsequent cooling, the most tight abutment of the elastic-elastic elements to the body workpiece is ensured.

In the following, the aforementioned device, described in general categories, is explained by the example of some particularly preferred embodiments that provide additional advantages.

In one of the preferred embodiments, the body can be provided with sprue recesses for supplying the resilient material in the mold cavities corresponding to the said resilient elements. This embodiment is not the only one possible, since the supply of material to the places corresponding to the elastic-elastic elements can also be provided by means of holes and recesses in the injection mold itself. However, the implementation of the sprues in the body, nevertheless, allows to simplify the injection mold itself, as well as to reduce the number of cutting points of the elastic-elastic material after removal from the mold.

In the preferred embodiment shown in FIG. 1 and 5, the side walls of the housing are of varying height. With this design, the low sections of the walls provide the installer with better access to the contents of the box, making installation more convenient.

The base can be additionally equipped with knock-out zones for cable entries with a diameter of 16 and / or 20 mm, separated from the base by weakening lines or perforations. These zones can be used either in cases where it is not required to ensure tightness, or, if required, their tightness is ensured through the use of auxiliary means, for example, stuffing box seals.

Preferably, the aforementioned central part of the elastic membranes has a diameter such that cables with a diameter of 4 to 12 mm can be sealed into the box.

The inner side of the base can be additionally provided with protrusions made in the form of material lugs for fastening equipment intended to be placed in a box. In a particularly preferred embodiment, said projections can be arranged crosswise.

The shape of the box can be any, providing the possibility of casting resilient elements. The shape of a prism is preferred, particularly preferably the box is square or rectangular in plan.

In a particularly preferred embodiment, the height of the box is at most 40 mm. This height of the box makes it possible to install it under a false ceiling.

In the center of the base of the body, a threaded element can be placed for fastening to the anchor. This element expands the range of possible options for fixing the box to the surface.

In one preferred embodiment, the outer surface of the box, body and / or lid is provided with dimension lines to provide basic installation dimensions. On the inside of the aforementioned cover, markings can be made indicating the locations for cutting the hole for installing the socket.

In one preferred embodiment, the body and lid are made of polystyrene or polypropylene, and the resilient elements are made of one-component injection molded silicone rubber.

It should be understood that in this text the box is characterized only by such features that are sufficient to solve the problem, implement the purpose and achieve the selected technical result; no special mention of all the signs and utilitarian characteristics of the luminaire is required if specialists should be aware that products of the same kind have such characteristics and utilitarian characteristics and without them the main purpose is not realized; all the more, there is no need to limit the generalized features to any specific options, if such should be known to specialists and (or) can be selected according to known rules.

The design and use of the device is clearly illustrated by figures 1-5 by the example of private and specific embodiments.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 shows the box body. Light designates the body part, dark membrane punching elements and a sealing element made in one piece with them, located in a groove on the outer surface of the side walls in their upper part along the entire perimeter.

FIG. 2 shows the housing base from the inside. The dark oval on the left is the penetrating membrane. The large dark oval on the right is an additional seal installed over the piercing membrane. At the bottom, inside the oval, there is a place for a fastener without a seal, at the top there is a knock-out zone with annular outlines, separated by a line of weakening. The X-shaped slots are designed for fastening equipment installed inside the box.

FIG. 3 on the left shows an enlarged image of a tight linen element (highlighted in dark), made in the form of a strip, having a sawtooth cross-section to provide several contours of abutment to the lid. On the right, a section is shown, where the seal is visible from below, part of the body is above, and the cover is on top.

FIG. 4 shows the housing of FIG. 1 below. Dark stripes at the bottom - a sprue filled with resilient material and connecting the membrane piercing element at the top left on the side wall of the body with the piercing membranes at the base of the body.

FIG. 5 shows the body of FIG. 1 in a different perspective and a fragment of the cover. At the bottom right, dark shows the course of the sprue slot from the bottom of the base to the membrane piercing element.

IMPLEMENTATION OF THE USEFUL MODEL

As shown in FIG. 1-5, a junction box for surface mounting, contains: a housing having a base, side walls and sealing elements made of elastic-elastic material, and a cover. Sealing elements referred to include:

1) at least two piercing membranes (see Figs. 1 and 4), located in the base of the housing, made with the possibility of ensuring tightness after the installation of the fasteners.

2) membrane piercing elements made in the side walls of the body, having a lamellar central part, and a peripheral part in the form of concentric rings connected at the ends (see Figs. 1 and 4), 3) a stopping element located in the upper part of the side walls of the body along the entire perimeter so as to ensure a hermetic abutment of the above-mentioned cover to the body (see Fig. 1 and 3).

Said resilient members are formed by casting the resilient material into a mold containing a body preform.

As shown in FIG. 4 and 5, the body blank is provided with sprue recesses in the form of grooves, which are located in such a way as to provide the supply of elastic-elastic material in the mold cavity corresponding to the mentioned elastic-elastic elements.

To manufacture the body, the body blank with sprues is placed inside between the parts of the metal mold, liquid silicone rubber is injected under pressure in the cavities between the parts of the metal mold and the body blank, corresponding to the elastic-elastic elements, allow the rubber to harden, the parts of the metal mold are disassembled and the body is removed with elastic elements from the mold.

Co-molding of elastic-elastic elements with the body blank ensures complete tightness of their connection with the body blank and reduces the number of assembly operations to a minimum.

Claims (20)

1. Surface mounting box containing: a housing having a base, side walls and sealing elements made of resiliently elastic material, and cover; wherein said sealing elements include: at least two piercing membranes located in the base of the housing, configured to ensure tightness after the fasteners are installed, membrane piercing elements made in the side walls of the body, having a lamellar central part and a peripheral part in the form of concentric rings connected at the ends, sealing elements located in the upper part of the side walls of the housing along the entire perimeter in such a way as to ensure a tight abutment of the above-mentioned cover to the housing, characterized in that said elastic-elastic elements are formed by casting an elastic-elastic material into a mold containing a body blank. 2. Box according to claim 1, characterized in that the body is provided with sprue recesses for supplying the elastic-elastic material in the mold cavity, corresponding to the said elastic-elastic elements. 3. A box according to claim 1, characterized in that the side walls of the body in it have a varying height. 4. A box according to claim 1, characterized in that said base is provided with knock-out zones for cable entries with a diameter of 16 and / or 20 mm, separated from the base by lines of weakening or perforation. 5. Box according to claim. 1, characterized in that the above-mentioned central part of the elastic membranes is designed to enter cables with a diameter of 4 to 12 mm. 6. A box according to claim 1, characterized in that the inner side of the base is provided with protrusions made in the form of material lugs for fastening equipment intended to be placed in the box. 7. Box according to claim 6, characterized in that the protrusions are located crosswise. 8. A box according to claim 1, characterized in that it has a square or rectangular shape in plan. 9. A box according to claim 1, characterized in that its height is at most 40 mm. 10. Box according to claim 1, characterized in that a threaded element is placed in the center of the base of the body for fastening to the anchor. 11. A box according to claim 1, characterized in that its outer surface is provided with dimension lines to inform about the main installation dimensions. 12. A box according to claim 1, characterized in that a marking is made on the inside of the above-mentioned cover indicating the places for cutting a hole for installing the socket. 13. A box according to claim 1, characterized in that it is made of plastic, preferably polystyrene or polypropylene.

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