US 4,899,900 AGranted

Switching box

AssigneeRittal-Werk Rudolf Loh GmbH & Co. KG

InventorsJurgen Debus, Hans-Georg Koch, Jurgen Zachrei, Helmut Butergerds

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Abstract

The invention relates to a switching box with a framework support formed from framework side units. The switching box is sealed by having a bottom wall, top wall, two side walls, and the open sides of which can be closed by means of a cabinet door and a rear wall, or by means of two cabinet doors. The framework side units form a hollow profile, which have identical series of holes on the two sides that stand perpendicular to one another and are oriented toward the internal space of the box. The framework side units have a protruding sealing bar on the side which toward the external side of the box. The costs of parts and labor necessary for assembly are reduced while retaining universal construction. At least one portion of the framework side units are formed by multiple bending in a single piece with the bottom wall, the top wall and/or the side walls plates. The edging has a first section which extends perpendicular to the internal side of the plate and at its edge makes a transition into a second section which is bent outwardly and parallel to the plate. The end of the second section makes a transition into a third section which lies on the second section and is extended parallel to the plate beyond the second section. The third section is provided with a series of holes. At the end of the third section, a fourth section is bent perpendicular and toward the internal side of the plate and also have a series of holes.

Claims22

Dependent claims

A switching box comprising:

a framework support formed by framework side units, said framework support being closed by a bottom wall, a top wall and two side walls, said framework support having open sides which can be closed by at least one of a cabinet door and a rear wall, said framework side units each having a hollow profile, each side of said framework side units extending perpendicular to one another and oriented toward an internal space of said switching box having an equal series of holes on two perpendicular said framework side units oriented toward said internal space, and a protruding sealing bar extending from said side of said framework side unit facing an external side of said switching box, said framework side units comprising at least a portion of each said framework side unit attachable to another said framework side unit by having a multiple bending of a one piece plate (B) to at least one of said bottom wall (10), said top wall (12) and said side walls (11, 13), each said framework side unit having a first section formed perpendicular to an internal side of said plate (B), said first section having a first transition into a second section formed outwardly from said first section parallel to said plate (B), said second section making a second transition into a third section which extends back along said second section and projects inward beyond said first section, said third section having a first series of holes (27), said third section making a third transition into a fourth section extending perpendicular from said third section toward said internal side of said plate (B), said fourth section having a second series of holes (27).

Dependencies are inferred from the claim text.