Abstract: 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.

Abstract: 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.

Abstract: A housing for holding electronic plug-in modules includes an installation space open toward the front side of the housing for plug-in modules, an air suction space under the installation space, and a fan space above the installation space, in which at least two radial-flow fans are arranged one behind the other. Cooling air flows through the installation space essentially in the vertical direction, and at least a front mounted radial-flow fan is arranged at an angle, so that the exhaust-air flow of the front mounted radial-flow fan flows generally over a rear mounted radial-flow fan.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: For the purpose of high frequency effective insulation for gaps in the enclosure of electronic devices, a plate 1 is proposed that shows a groove 9 on at least one of its narrow sides 7, 8. In this groove 9 is a spring element 2 with its attached leaf clip 12. Attached on the leaf clip 12 is a right-angled leaf spring 13, with a base piece 21 and a contact piece 22. The contact piece 22 is bent back on itself and bears a contact fin 29, which makes contact with the corresponding contact piece of a neighboring prefabricated component.

Abstract: An insertion and withdrawal device for a plug-in assembly, provided for insertion into a sub-rack. A plunger is disposed in a holding bracket of the device for the purpose of actuating a microswitch. A space, that permits a switching process of the microswitch prior to separation of the plug connector, is provided between a press-down shoulder of the pivoting lever and the front surface of a profiled rail.

Abstract: In an HF-tight component carrier, a longitudinal groove having a V-shaped profile is proposed for sealing the cover from the upper module rails. A spring member, having a V-shaped cross section is inserted into this longitudinal groove in a fitting and clamping manner. The cover is equipped with edge strips which engage the longitudinal groove. The spring member is provided with a planar rear leaf including a spring tongue and an acutely-angled spring leaf with a claw.

Abstract: For the purpose of high-frequency sealing the longitudinal gaps between the U-shaped profiles of the front plates of modular units that are to be inserted into HF-tight housings of electronic equipment, a spring element of metal, for example a non-corrosive steel, is proposed.This spring element is composed of two identical contact springs having spring leaves and a spring clip disposed therebetween. The spring clip is provided with a clamping leaf equipped with claws. A planar rear leaf connects the two contact springs with the spring clip. An angled-away insertion strip at the clamping leaf facilitates insertion of the spring clip onto a longitudinally rectangular longitudinal web at the rear face of the front plate. The spring leaves are provided with contact humps and an abutment strip and contact the longitudinal strip of the front plate of the adjacent modular unit which is provided with an insertion slope.

Abstract: A component carrier for accommodating circuit boards includes two front module rails and two rear module rails which connect two parallel side walls with one another. Between the side walls, guide rails for insertion of the circuit boards are provided at the module rails. The frontal faces of the rear module rails are provided with threaded holes for screwing on backplanes. Insulating strips which are equipped with fastening elements and are clamped to the module rails by means of these fastening elements serve to insulate these backplanes against the module rails. The insulating strips are provided with holes which correspond to the threaded holes in the module rails.

Abstract: The invention relates to a grounding element 1 for fastening to an aluminum component 11 and including a corrosion insensitive and wear resistant contact element 3 for the connection of a ground cable 13. In order not to adversely influence the visual impression of the aluminum component 11, the grounding element 1 includes a basic aluminum body 2 which can be welded to the aluminum component 11 and is connected mechanically and electrically with the contact element 3.

Abstract: The present invention relates to housings, particularly module carriers, equipped with supporting rails for the accommodation of a plurality of mutually parallel guide rails into which plug-in units equipped with electronic and electric components can be inserted. According to the invention, unoccupied plug-in locations are covered by individual covers whose width essentially corresponds to a multiple of the smallest scale unit and which can be combined in any desired number so that the air flow in the housing or in the module carrier is improved in a simple manner.

Abstract: The present invention relates to a mechanical and electrical connection between an extruded metal profile and a cast metal member. The cast member is provided with a peglike projection which is adapted to the interior configuration of the extruded profile and is insertable into the extruded profile. In order to realize a connection which is reliable even under mechanical stresses, which does not interfere with the subsequent lacquering and burn-in processes and which, moreover, is invisible, the invention provides that a spring of a hardness greater than both the extruded profile and the cast member is disposed between mutually facing faces of the extruded profile and the cast member. Barbs are shaped onto the cast member so as to engage in both components.