Abstract: Arrangement to test HF tightness of a junction between two adjacent parts including HF generator (4), HF line that guides the signal over junction (1), measuring device (10) as well as a signal analyzer. HF line includes two waveguides (5a, 5b) that have inner conductors (6a, 6b) connected all the way through by a connection conductor (9) and outer conductors (7a, 7b) interrupted and each connected with electrodes (8a, 8b). A capacitive coupling of the HF signal occurs on one side of the junction and a capacitive decoupling of the HF signal takes place on the other side. By comparing the measured transmission and/or reflection of the HF signal with a transmission or reflection characteristic for the junction, it can be determined if the junction is HF tight. This makes it possible to test HF shielded cases for HF tightness in a non-destructive manner and without interfering with the contents.

Abstract: The invention relates to a subrack (1) for industrial electronics. The front and/or rear edge of a cover sheet (4) and that of a base sheet (6) are formed by edge-folding for fixing a specially configured angular strip (12). 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.

Abstract: On a module carrier for digital communications technology modules, a guidance and support element for incoming and outgoing optical wave guides is arranged that is formed of two pieces, an LWL guidance and an LWL support element. An adjustable connector accomplishes the connection of both elements, whereby their position with each other is permitted to change.

Abstract: A double-walled housing 1 for the accommodation of electrical and electronic components possesses on its inner wall 2 a ventilation opening 11. In the gap 4 between inner wall 2 and external wall 3 sits an air filter 12 with a cylindrical filter cartridge 13. This air filter is drawn up on a supporting lattice 14, which is fastened to a removable assembly ring 15. A closeable service opening 20 with a cover 21 is in the external wall 3 and aligns with the ventilation opening 11.

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: 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.

Abstract: A high frequency shielded duct for a shielded cable 1 runs through the wall 2 of an electrically conductive housing 3 and contains a channel 4 with a resilient-flexible contact element and is situated on the housing 3. The cable 1 lies with its bare metal shield contacting the base 15 of the channel longitudinally where it is pressed into place by the contact element. The flue 5, formed by the channel 4, represents a wave duct with high absorption and prevents the passage of high frequency electromagnetic waves.

Abstract: In a double-walled electronics cabinet 1 an axial fan 5 is inserted in its inner wall 2. In order to prevent the creation of air eddies in front of the fan intake 8, an air baffle plate 16, which is in direction of flow, is located over the fan intake 8 in the gap 4 between inner wall 2 and external wall 3. The efficiency of the axial fan 5 is crucially improved by the division of the flow of fresh air, and the creation of air eddies and differences in pressure are purposefully avoided.

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 cabinet for the acceptance of electrical and electronic components includes a rack to which a door leaf 8 having a hinge 2 as well as wall elements are mounted in a detachable fashion, the hinge 2 having at least one stationary section 3 attached to a side rail 1 of the rack as well as at least one pivoting section 4 attached to the door leaf 8. The cabinet is improved in such a fashion that the pivot axis 13 of the hinge 2 is disposed in the vicinity of the outer side of the door 14. A cabinet is thereby created whose wall elements can not be accessed from the outside whose attachment elements in the vicinity of the hinge 2 are advantageously easily accessible by opening the cabinet door even when the cabinet is fully equipped and without having to remove its contents.

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 switch cabinet for electronics and electrical engineering is proposed with a door hinged on at least one side (1) as well as a centering mechanism for the level centering of the door during closing (1), where the centering mechanism is arranged in the area of the locking mechanism, and where the centering mechanism's components, one centering piece (3) and one catching part (11), are arranged on the door (1) or on a framework element (2) of the switch cabinet and interlock when closing the door (1).

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: The invention deals with an electronics cabinet with a shelving frame of sectional rails 8 on which casings 2,3 are attached. On the insides 19 of the casings 2,3, longitudinal grooves 38 are designed in which contact springs 24 lock into. The contact ridges 27 of these contact springs 24 lie at each neighboring sectional rail 8 when the casings 2,3 are attached.

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: A corner joint element 1 for longitudinal bars 7 and cross bars 8 that are created from hollow profiles 10 of a rack has three legs 2, 3 and 4, which are standing at right angles to each other. The surface of each leg 2, 3, 4 has at least one cavity 11. For the fastening of a hollow profile 10, slipped onto a leg 2, 3, 4, the wall area 12 of the hollow profile positioned above the cavity 11 is pushed into the cavity 11.

Abstract: The discovery concerns a fastening device for hinge parts and wall elements on frames of equipment enclosures in the electronic industry, whose sectional side rails show a longitudinal groove. A sprung u-clip 13 showing two thread carriers 16,23, is attachable in this longitudinal groove. A spring tongue 20 on the u-clip faces outward and reaches into a mounting on the longitudinal groove. The longitudinal groove bears rows of through holes corresponding to the thread carrier 16,23 for attachment screws.

Abstract: An arrangement for coding a plug-in space of a plug-in module in a module rack by using a layout of at least one coding pin and at least one associated coding hole. The coding hole has at least one holding bracket through which extends a fastening screw, and the module rack has at least one front profiled rail which has a longitudinal groove into which there is inserted a perforated strip having equidistant holes. The holding bracket has a receiver for the coding pin, which receiver has an internal polygon. The coding pin is displaceable within the receiver and has a corresponding external polygon. The coding pin is provided with a longitudinally extending coding rib at its shaft. Also provided is at least one coding plug which has at least one pin for the introduction into a hold of the perforated strip. The coding plug has the coding hole for the coding pin and a through hole for the fastening screw. The coding hold is provided with an edge recess for the coding rib.

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.