The invention relates to an enclosure for accommodating devices, in particular electronic devices, elements and the like comprising a base plate and side walls rising therefrom, wherein an insert element joining the side walls is installed in the contact region between two adjacent side walls.
It is known to use, for example in communication and control technology, enclosures or small control cabinets, respectively, which accommodate, for example, sensors together with an electronic evaluation circuit, which in turn are or can be provided with connecting, display, fastening and/or actuating elements. Moreover, other substantially self-sustaining electronic devices and elements may be accommodated in small enclosures of this type. Those small enclosures may be accommodated outside or within a larger switchgear cabinet and may be adapted to customer needs.
A switchgear cabinet comprising a framework is for example known from WO 2010/121588 A2. In order to achieve a high strength and loading capacity of the framework and to realize virtually unlimited dimensions within a short period of time, bars are provided which comprise an outer bar having an open profile. The open region of the outer bar facing inwardly is covered by an inner bar and connected thereto by means of a rivet connection, which inner bar abuts outwardly two sides of the outer bar and comprises at least a bend serving as a supporting surface for a wall surface.
If smaller, self-sustaining control cabinets or enclosures, respectively, are to be realized, it is known to build small enclosures from metal sheets, wherein the side walls, the rear wall, the bottom and the cover part made from metal sheet are welded together along their contact edges and are subsequently grinded. In order to provide, for example, mounting supports for devices, elements and the like within the small enclosure, for example bolts and mounting brackets are attached by means of spot welding. Door hinges and closures are mounted on the small enclosure. The construction of small control cabinets or enclosures, respectively, of this type requires complex manufacture, in particular because of the required welding work.
Accordingly, when building small enclosures, corner connectors are used which are plugged into the associated profile walls or are screwed thereto. An example is shown in DE 103 00 418 A1, where the corner connector is provided with webs in sections which engage insert grooves of the wall profile. Boards and other devices are then mounted to the wall profiles.
It is the object of the invention to disclose an enclosure of the type mentioned in the introductory which is made up simple and has few individual parts and allows simple accommodation of electronic devices, elements and the like.
This object of the invention is solved by an enclosure for accommodating electronic devices, elements and the like, comprising a base plate and side walls rising therefrom, wherein an insert element joining the side walls is installed in the contact region between two adjacent side walls, wherein respective free edges of the side walls are retained force- or form-fit within holding grooves of the insert element.
According to the invention, it is provided that respective free edges of the side walls are retained force- or form-fit within holding grooves of the insert element. Thus, the insert element may be moved over the free edges of the side walls in a simple way, the edges being received within the holding grooves and guided therein during assembly. In order to create room for the insert element and to allow easy introduction, the side walls may at least partly be provided with recesses in the contact region. The width of the recesses depends on size and shape of the insert element. Accordingly, a very simple manufacturing process for an enclosure is provided which does no longer require welding and a subsequent finishing of the welding seams, e.g. by grinding.
In many applications, a box-like enclosure is appropriate where the side walls are perpendicular to another and further perpendicular to the base plate. However, the invention also allows building basin-like structures arranged at an angle to another or with the bottom, respectively, which is different from 90°, in particular is larger than 90°.
In an advantageous embodiment of the invention, however, the insert is formed as an optionally rounded rectangular profile, where the holding grooves are provided at adjoining sides of the insert element. Further, a circular cylindrical profile or a profile having oval cross-section are conceivable. Designs of that type are exceptionally strong. In particular, the insert element may be manufactured from plastic. Accordingly, the insert element may be manufactured exceptionally easy and is easy to machine. By forming roundings in the region of the edges, the design may be optimized. Additional possibilities of designing are forming of contours and/or colored design elements.
Further preferred, the insert element may comprise part holding grooves open toward the interior of the enclosure which extend spaced apart from another parallel to the base plate. It is further preferred that the part holding grooves overlap at edges of adjoining sides of the insert element. The part holding grooves serve to accommodate electronic devices or elements, in particular to accommodate mounting plates for such devices or elements. If, for example, the four vertical edge regions of the enclosure are provided with insert elements of this type, the mounting plates may be inserted and retained in part holding grooves respectively arranged on the same level at each insert element.
In order to additionally fasten the devices or elements or the mounting plates, respectively, a plurality of mounting holes may be provided near the part holding grooves which are arranged along the edge of adjoining sides alternately with the part holding grooves and spaced apart therefrom. By means of suitable screw connections, the mounting plate supported in the part holding grooves can be safely fixed. In particular, the mounting holes may be arranged on the adjoining sides of the insert element equidistantly to the edge of the adjoining sides. Accordingly, a pre-defined pattern is created which simplifies interior fitting of the enclosure.
In order to attach, for example, the base plate or a cover part to the inserted insert elements, the free ends of the insert elements may respectively be abutted against the base plate and the cover part which respectively comprise at least one mounting hole for mounting the base plate or the cover part, respectively. For the purpose of easy fixing, the base plate and the cover part may comprise throughbores, respectively corresponding to the mounting holes at the free ends of the insert element. By means of simple screw connection, base plate and cover part of the enclosure may be assembled in a simple way, thus avoiding a weld connection.
Such a mounting hole, however, may also fix a further component, for example a coupling piece or a locking or closure piece.
According to a preferred embodiment of the invention, a coupling piece fixed at a free end of the insert element is provided, where sleeves for receiving hinge pins or locking bolts are formed. A door, for example, may be suspended in these sleeves and may be closed. The coupling piece may also be integral with the insert element.
According to a further embodiment, the coupling piece is contoured to form a support surface for a door, a cover part or a further component.
It is particularly preferred that the base plate is integral with at least one of the side walls, in particular preferably with all side walls. In this way, an enclosure is formed where the side walls are bent with respect to the base plate. That enclosure may be fabricated in a punching and subsequent bending process, so that assembly of the enclosure by using the insert element is considerably simplified.
The invention is explained in detail below with the aid of the appended drawings which are not necessarily to scale. It is shown in:
The insert element, here shaped as a rectangular profile, the edges thereof optionally being rounded, comprises holding grooves 22, 24 for the free edges 12′, 14′ of side walls 12, 14 in a direction of extension according to arrow E. If a basin-like structure is intended, shaping of the insert element and arrangement of holding grooves, respectively, should be adapted accordingly. Holding grooves 22, 24 are formed at adjoining sides 23 and 25 of insert element 20. In order to simplify interior fitting of the enclosure, insert element 20 further comprises five part holding grooves 26 in the illustrated embodiment, which are open towards the interior of the enclosure. Part holding grooves 26 are arranged vertically one above the other and equidistantly in the direction of extension of the insert element 20 according to arrow E. Part holding grooves 26 are formed at an edge 28 of adjoining sides 23, 25 of insert element 20 and extend substantially perpendicular to the direction of extension E of insert element 20. Above each part holding groove, two mounting holes 30a and 30b are respectively provided. First mounting hole 30a is provided at side 23 of insert element 20 where holding groove 22 for side wall 12 extends. Second mounting hole 30b is arranged at side 25 of insert element 20 where wall holding groove 24 for side wall 14 extends. Free end 21a of insert element 20 may be abutted against a cover part, not shown here, or a door, for example. Free end 21b of insert element 20 may be abutted against base plate 10. Free ends 21a, 21b of insert element 20 each comprise a mounting hole 29,
Coupling piece 40 may be designed for example such that it comprises a post (not visible here) engaging force-fit into mounting hole 29 (
The features of the invention disclosed in the previous description, in the drawings and in the claims may be material for realizing the invention, either individually or in any combination thereof.
Number | Date | Country | Kind |
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102011056463.2 | Dec 2011 | DE | national |