Schroff Gmbh

Volker Haag

Michael Joist

Paul Mazura

Klaus Pfeifer

Klaus-Michael Thalau

Hans-Ulrich Gunther

Udo Weiss

Klaus Kern

Hans-Jorg Weiler

Hans-Ulrich Günther

Stefan Hauber

Hans-Jörg Weiler

A plug-in circuit board for insertion into and withdrawal from a rack having at least one front profile rail includes a front plate and a lever-latch handle with a gripping bar pivotably-mounted to the front of the plug-in circuit board. The gripping bar includes an elastically deflectable tongue which, in the pushed-in state of the plug-in circuit board, engages the front plate by a magnetic force between a magnetized stop on the front plate and the tongue.

Circuit board with lever-latch handle

A device for the insertion and extraction of a plug-in module into a module frame which has at least one front module bar, contains a swivel-mounted lever which is located in the front area of the plug-in module and whose short lever arm has at least one lever cam and a push-off nose and a pressure piece which is fastened to the module bar. The pressure piece absorbs the forces transferred from the lever, whereby the pressure piece has at least one recess, in which the lever cam of the lever reaches into during the insertion of the plug-in module. Furthermore the pressure piece has at least one push-off shoulder against which the push-off nose of the lever pushes off during the extraction of the plug-in module.

Device for the insertion and extraction of a plug-in module

The invention relates to a subrack ( ) for industrial electronics. The front and/or rear edge of a cover sheet ( ) and that of a base sheet ( ) are formed by edge-folding for fixing a specially configured angular strip ( ). This enables known module rails to be integrated with the cover or the base and means that said module rails can be produced from sheet steel, which significantly reduces the production costs.

Subrack

A card-holding device for locking a printed circuit card in a guide rail of a subassembly/subrack includes a retaining element that is inserted in the guide rail at the front edge of a printing circuit card when the circuit card is inserted to retain the card. The retaining element swivels outward and away against the elastic restoring force of an activating element. The activating element is releasable from the retaining element to allow withdrawal of the printed circuit card.

Card-holding/locking device for the securing/latching of a printed circuit card/board

An assembly carrier for plug-in circuit boards has front supporting rails formed from the front end of a cover plate and base plate and has two side walls. Each of the supporting rails includes a roof that assists in insertion and removal of the plug-in circuit board. The roof includes a row holes and is formed from front edges of the cover plate and the base plate. A sectional rail of extruded aluminum is fastened on the cover plate and the base plate.

Assembly carrier

A shielded module support structure for printed circuit boards 2 can be inserted on guide rail 7 and having electrical or electronic components has two parallel side walls 3 and at least four module rails 4 for bearing the guide rails 7. The module rails are anodized aluminum or an anodized aluminum alloy and have, at the front side, at least one seating surface 12 for one or more front plates 9, to improve electrical conductivity, sections of the module rails 4 are freed from the anodized layer. This can be done by removal of protrusions 18 by processes such as mechanical milling. For improved contacting, resilient contact bands 19 may be snapped onto the rails 4 into engagement with the bared seating surfaces 12. The resilient contact bands include sharp-edged breakouts 22 for conductive engagement with plates 9 for effecting a shielded enclosure about the circuit boards 2.

Module support structure

A contact element having at least one leaf spring 2,3 has a U-shaped contact means 6, the two U-legs 8,9 of which taper towards their ends and can be elastically deformed with respect to each other. This contact element 1 is introduced into a guide groove 22 of a guide rail 13 of a module support structure or the like. The leaf springs 2,3 thereby contact a printed circuit board which can be inserted into the module support structure and the contact means 6, together with guide rail 13, can be clamped in a positioning hole 15 of a module rail 16 of the module support structure to thereby establish electrical contact with the module rail 16. In this manner, the interfering effect of an anodized layer on the module rail 16 is circumvented.

Contact element for electrical contact of printed circuit boards to a

A module support structure is proposed for printed circuit boards which can be inserted on guide rails. The four parallel module rails of the module support structure to which the guide rails are mounted are connected to the two parallel side walls via a special mounting technique. Specially shaped mounting bolts are used with a head bolt having a flat seating surface, a substantially cylindrical threaded shaft, as well as a transition piece disposed between the bolt head and the threaded shaft and tapering in a conical manner towards the threaded shaft. The mounting bolts are fed through cylindrical mounting holes in the module rails. During tightening, the transition piece abuts against the outer edge of the mounting holes to force the module rails against the projections disposed above or below the mounting holes. In this manner, an exact positioning of the module rails relative to the side walls is necessarily effected. The outer edge of each mounting hole can be deformed by the transition piece until the seating surface of the corresponding bolt head seats on the side wall.

A shielded module support structure 1 for printed circuit boards 2 which can be inserted on guide rails 7 and having electrical or electronic components is proposed comprising at least four module rails 4 for mounting the guide rails 7. The printed circuit boards 2 are assembled into plug-in modules 10, each having a front plate 9, wherein the front plates 9 are attached to a threaded-hole-strip using screws, the threaded-hole-strips seating in a groove 11, opening towards the front side of the module support structure 1, in the front module rail 4. In order to assure shielding of the module support structure 1 against interfering radio frequency fields, the front plates 9 are contacted with the module rails 4 using specially formed resilient contact bands 15 which can be snapped onto a seating surface 12 of the module rails 4. The resilient contact bands 15 have a plurality of break-outs 18 resiliently facing the front side of the module support structure 1 as well as a plurality of contact spikes 19 facing the seating surface 12. The resilient contact bands 15 preferentially consist essentially of flat sheet metal the upper edge 16 of which is bent for engagement into an upper engagement groove 13 and the lower edge 17 of which is bent for engagement into a lower engagement groove 14.

Growing community of inventors

Bad Wildbad, Germany

Volker Haag