Electrical distribution box for surface mounting on a wall.

p0001The invention relates to an electrical junction box for surface installation, consisting of a quaderfömigen bottom part, interchangeable at the bottom part of salary Erten wall parts and one can be placed on the front side of the wall, fastened to the bottom part of the lid, the joinable parts (wall parts, cover) without sealing, inlaid seals or equipped with molded seals and interchangeable wall parts like have identical or different insertion or sealing elements for transit and entry of cables and installation materials.

p0002Such junction boxes are widely known in the art.

p0003It is also common that such junction boxes be sealed at the joints between the cover, wall parts and bottom part with seals to ensure a use in wet locations. With the use of gaskets, it is possible to provide these as separate elements, or integral to mold the seals on parts of the junction box, as long as both parts are made of plastic material of suitable consistency. Basically, the data here junction box is preferably made of plastic.

p0004A junction box of the species, as described in the preamble, is known from DE-PS 941 734. Here the soil is formed integrally with the side walls, but the side walls have towards the lid open, and the bottom torbogenartig shaped recesses into which side wall portion inserts with profiled rubber seals can be incorporated. This provides the advantage that various side panel inserts for different cable entries can be used in the same size and design of the junction box.

p0005However, the standard size of the junction box is fixed, so that for different height dimensions different ground parts including side wall parts have to be manufactured in one piece, which can then be completed with the corresponding side wall cutouts.

p0006From DE 39 20 964 A1 describes a junction box is known in which the bottom wall parts are formed at half the height of the complete side wall having the cut-half of the respective cable entry or the like. These parts are complemented with a frame part, which comprises the further semi-circular shape of the cable entry and complements the wall parts to the full amount. In addition, a lid is provided there as the conclusion of the can. The arrangement of the cover fastening screws are in the corner regions at the bottom portion, and sleeve-like on the intermediate frame, ineinsteckbare elements are provided, which are penetrated by the fastening screw.

p0007In this box a variation of the cable inlets is not possible, but after finishing the box this box is useful only for the particular application, so that for different introductions different doses have to be manufactured.

p0008Proceeding from the initially described prior art, the invention aims to provide an electrical junction box generic type which allows a high variety of applications with a small number of parts to be produced, in particular different heights forming the sides of the can allows.

p0009To achieve this object it is proposed that the base portion integrally formed in the corner regions, has parallel to the wall parts projecting dome circular cross-section, that the exchangeable wall portions each comprise the entire side wall from the bottom part up to the cover and at one side marginal edge of a cylindrical, each have a mandrel attachable sleeve and on the other side edge of at least approximately forming a quarter circle in cross-section guide having that can be pushed to a pushed onto a mandrel sleeve of the adjacent wall part or inserted in a slide-a Dom sleeve of an adjacent wall part.

p0010By this design it is possible, using one and the same base part and one and the same lid employ respectively different wall parts, which may have a large amount at flat doses, for example a low level or at high doses, which also different side wall parts for different insertion or connecting means (fitting, puncture opening or the like) can be used. Moreover, the formation characterized in claim allows easy installation and a verwechselungsfreien application of the corresponding parts, so that the mounting for the user is relatively simple. In any case, the production and storage costs are reduced by this training. At best, it is necessary to use at different heights Seitenwandungsteilen different lengths fastening screws which serve to fasten the cover to the base part and thus to the final fixing of the side wall parts.

p0011A preferred development is seen in the fact that the bottom part is offset in lying between the wall including encompassed by this Domen inner area towards the border area to cover the junction box towards projecting.

p0012In particular, in connection therewith, it is advantageous for the present in the undisplaced, in alignment with the bottom edge portion range cup-shaped, having Punchable or perforated wells in the fasteners, such as screws, are used.

p0013In this way it is ensured that the heads of fasteners, such as screws, lag behind the flight of the inner area of ​​the floor, so that damage of the incoming cables or the like are excluded.

p0014Furthermore it is preferably provided that the undisplaced region with the recesses opposite the outer peripheral edge of the bottom part of the side wall after a relatively inward offset. This makes it easy access to the wells for the use of fastening means, in particular screws, possibly of the can end side without these recesses or the attachment means would be concealed by wall parts or the like, wholly or partly.

p0015Furthermore, it is considered advantageous that are formed at all the peripheral edges of the bottom part in the area between the outer bearing surface of the bottom part and which, after relatively inward offset portion parallel to the floor extending insertion grooves, in the flat holder are lockably insertable the outside through the escape of the wall parts protrude and have in this area of ​​fasteners through tangible mounting ears. By this design it is possible to use external fastening points for the arrangement of fixing screws and the like instead of the internal fixing points of the can.

p0016A further preferred embodiment is seen in that the domes are formed hollow and shaped out of the wall, radially inwardly projecting detents comprise forming a thread for a fastening screw of the cover.

p0017This design is manufactured especially favorable because in the domes is not a continuous thread has to be formed, but are formed by cut-away from the wall of the dome spring arms with by relatively inwardly projecting detents threads which allow axial insertion of a fastening screw to the stop, which only these fixing screws have to be turned with a screwdriver to release the cover, holding the cover but sufficient a simple axial insertion.

p0018Furthermore, it is advantageous if the base part circumferentially one having the wall parts projecting sealing edge, on which the wall parts with a corresponding groove are appropriately slid.

p0019Through this design, the waterproofing on the one hand improved because both the connection portion of the side wall parts and floor as well as in the connecting area of ​​the lid and side wall portion quasi labyrinth seals are formed, said cooperating to groove and pen style elements also allow precise guidance and positioning of the parts during assembly and sure. This measure is also the feature of claim 8 conducive.

p0020Embodiments of the invention are illustrated in the drawings and described in detail below. It shows:<dl id="dl0001"><dt>Fig. 1</dt><dd>the bottom part of a first embodiment in plan view;</dd><dt>FIG. 2</dt><dd>likewise seen in section II-II of Figure 1;</dd><dt>Fig. 3</dt><dd>a detail seen in section;</dd><dt>Fig. 4</dt><dd>the bottom part seen from below;</dd><dt>Fig. 5</dt><dd>likewise seen in the section VV of Figure 4;</dd><dt>Fig. 6</dt><dd>a detail in view;</dd><dt>Fig. 7</dt><dd>a further detail in plan view;</dd><dt>Fig. 8</dt><dd>the detail in side view;</dd><dt>Fig. 9</dt><dd>the detail seen in longitudinal section;</dd><dt>Fig. 10</dt><dd>the cover part in a bottom view;</dd><dt>Fig. 11</dt><dd>likewise seen in section;</dd><dt>Fig. 12</dt><dd>the cover part when viewed from above; </dd><dt>Fig. 13</dt><dd>a sidewall portion in view;</dd><dt>Fig. 14</dt><dd>likewise in plan view;</dd><dt>Fig. 15</dt><dd>likewise seen in section XV-XV of Figure 13;</dd><dt>Fig. 16</dt><dd>likewise seen in section XVI-XVI of Figure 13;</dd><dt>Fig. 17</dt><dd>likewise seen in section XVII-XVII of Figure 15th</dd></dl>

p0021The electrical junction box for surface installation consists essentially of a base part 1, which is a top view of a square, interchangeable at the bottom part of salary Erten wall parts 2 and an attachable on the front side of the wall 2, at the bottom part 1 can be fastened lid. 3

p0022In the embodiment, all the parts are joined together without additional elastic seals. The wall parts 2, different insertion or sealing elements for transit and entry of cables and the like installation material.

p0023The bottom part 1 has in the corner areas molded, parallel to the wall portions 2 projecting Dome 4 circular Querschitts on. The exchangeable wall portions 2 each comprise the entire side wall from the bottom part 1 up to the cover 3. At a side edge, the wall parts 2, a cylindrical plugged onto in each case a mandrel sleeve, while on the other side edge of the wall 2 is a cross-section more than a quarter circle forming guide 6 is formed, which can be pushed to a pushed onto a mandrel 4 sleeve 5 of the adjacent wall part 2 or can be inserted into a slide-a Dom 4 sleeve 5 of a neighboring wall part. 2 In the final assembly location so the guide 6 comprises the sleeve 5 partially. The bottom part 1 is offset toward the projecting between the wall 2 including from these included Dome 4 lying against the inner region to the edge region from the lid 3 of the junction box. In undisplaced, located in alignment with the bottom edge portion range cup-like, Punch capacity or perforated recesses 7 are provided, which are by tangible of fasteners, such as screws. These recesses can be either punched or these spaces can be knocked out of predetermined breaking points in the corresponding oval marked areas.

p0024The undisplaced region with the recesses 7 is offset from the outer peripheral edge of the base part 1 by relatively inside. On all peripheral edges of the bottom part 1 an insertion groove 8 is in the area between the outer bearing surface of the bottom part 1 and the offset to the relatively inner region parallel to the bottom extend on each edge formed in the area of ​​the outside holder 9 are lockingly inserted. These holders 9 are left out about the escape of the wall 2 and have tangible by mounting ears 10 in this area of ​​fasteners (screws) on. The Dome 4 are hollow and have from its wall cut away and molded, radially inwardly projecting pegs 11 which form a thread for a fastening screw 12 of the lid. 3 The corresponding screw which is shown in Figure 6, can be inserted through the corresponding holes of the cover 3 and introduced into the dome 4, wherein the detents 11 spring open and clear the path for the fixing screw 12th In the opposite direction to lock the catches so that the bolt can not be pulled axially, but can only be solved by turning with a screwdriver.

p0025The bottom part 1 has a circumferentially on the wall portions 2 projecting sealing edge 13 on which the wall parts 2 are pushed to fit with a corresponding groove fourteenth Likewise, the wall portions 2 on its upper edge a projecting sealing edge 15, which engages in a groove 16 on the inside of the lid 3, so that the parts with each other plug-connected and secured in position, are also before the fastening bolts 12 are arranged properly. By this design it is possible for the individual sidewall portions respectively select the purpose accordingly, so that using the same standard components different junction boxes can be assembled. Because of this inventive design, it is also possible to vary to stock high wall sections and use, so that doses can be combined with different installation height from standardized components.