DE1070718B

DE1070718B -

Info

Publication number: DE1070718B
Application number: DENDAT1070718D
Authority: DE
Publication date: 1959-12-10

Description

Die Erfindung betrifft Installationsgeräte, wie Schalter, Selbstschalter, Siclierungselement u. dgl., mit einer am Boden des Sockels vorgesehenen Einrichtung zur Befestigung und Aufreihung auf einer oder mehreren Tragschienen bei Schalt- und Verteilungsanlagen. Bei solchen Anlagen werden die Installationsgeräte heute nicht mehr mit ihrer Bodenfläche nebeneinander auf Schalttafeln, sondern auf Tragschienen befestigt.The invention relates to installation devices, such as switches, automatic switches, Siclierungselement and the like., with a device provided at the bottom of the base for fastening and lining up on a or several mounting rails for switchgear and distribution systems. In such systems, the installation devices today no longer with their floor area next to each other on control panels, but on mounting rails attached.

Sicherungselemente mit ihrer im wesentlichen quadratischen Grundform sind in der Regel starkwandige Porzellankörper, an deren diametral gegenüberliegenden Ecken die Einsatzlöcher für die Kopfschrauben raummäßig leicht Untergebracht werden kön^- ·. Bei Installations-Selbstschaltern und auch bei ^inschaft mit Sicherungselementen und Sei.. altern zum Einbau gelangenden Schaltern, die im Zuge der technischen Entwicklung im Hinblick auf die Sockelmaße verhältnismäßig klein bemessen sind und vielfach auch aus Kunststoff bestehen, steht derartiger Raum für die Schraubenaufnahmelöcher nicht in solchem Maße zur Verfügung, und es ist daher erwünscht, auf deren Anbringung ganz verzichten zu können, sofern die Brfestigungssicherheit darunter nicht leidet.Protectors with its substantially square basic shape Koen usually thick-walled porcelain body, at the diametrically opposite corners of the insertion holes for the head bolts room moderately easy Housed ^- ·. With installation self-switches and also with ^ inschaft with fuse elements and bees .. age switches to be installed, which are relatively small in view of the base dimensions in the course of technical development and are often made of plastic, there is no such space for the screw holes available to such an extent, and it is therefore desirable to be able to dispense with their installation entirely, provided that the security of fastening does not suffer.

- Soweit es sich um die Befestigung derartiger Installationsgeräte auf Tragschienen handelt, hat man als Gewindeträger für die Befestigungsschrauben Laschen angebracht, die die Tragschiene hintergreifen, so daß also das Installationsgerät mit seiner Bodenfläche gegen die Tragschiene gepreßt wird. Bei einer anderen bekannten Befestigungsform für runde Schalter auf einer Tragschiene wurde so vorgegangen, daß die beiden Befestigungsschrauben des Sockels in einen metallischen Steg eingreifen, der parallel zur Tragschiene verläuft und in eine entsprechende Nut in der Sockelbodenfläche eingebettet ist. Der Sockelboden enthält nun ferner noch eine quer zu dieser Nut verlaufende tiefere, radial nach außen führende, den Sockelquerschnitt zwischen den Schrauben gefährlich schwächende Nut zur Einbettung einer Befestigungsschelle mit Spannschraube, wobei der dem Sockel zugewendete Steg der Klammer durch den erwähnten Befestigungssteg hintergriffen und am Schalterboden befestigt wird, während der andere freie Schenkel nach Entfernung der Spannschraube wie ein Haken über die Tragschiene gehakt und durch Anziehen der Spannschraube befestigt wird, wobei eine Einwärtskröpfung des freien Steges die Tragstange hintergreift. Diese Ausbildung der Befestigungsvorrichtung ist teile- und arbeitsmäßig aufwendig und teuer.- As far as the fastening of such installation devices on mounting rails is concerned, one has as a thread carrier for the fastening screws, brackets are attached that engage behind the mounting rail, so that the installation device is pressed with its bottom surface against the mounting rail. At a Another known form of attachment for round switches on a mounting rail was so proceeded that the two fastening screws of the base engage in a metallic web parallel to the Support rail runs and is embedded in a corresponding groove in the base bottom surface. The plinth floor now also contains a deeper, radially outwardly extending transverse to this groove, the Base cross-section between the screws dangerously weakening groove for embedding a fastening clip with clamping screw, the one facing the base The web of the clamp is engaged behind by the aforementioned fastening web and on the bottom of the switch is attached, while the other free leg after removing the clamping screw like a hook is hooked over the mounting rail and fastened by tightening the clamping screw, with an inward offset of the free web engages behind the support rod. This training of the fastening device is complex and expensive in terms of parts and labor.

Die Befestigung mittels Schrauben, die den Sockel durchsetzen, ist jedoch namentlich für Schalter und Selbstschalter ungeeignet; denn deren Sockel sind, Installationsgerät,
wie Schalter, Selbstschalter,
Sicherungselement u. dgl. '
mit einer am Boden des Sockels
vorgesehenen Einrichtung zur Befestigung auf Tragschienen bei Schalt-
und VerteilungsanlagenHowever, fastening by means of screws that penetrate the base is unsuitable for switches and automatic switches; because their bases are installation devices,
such as switches, automatic switches,
Securing element and the like '
with one at the bottom of the pedestal
provided device for mounting on mounting rails for switching
and distribution systems

Anmelder:Applicant:

Busch-Jaeger Dürener Metallwerke
Aktiengesellschaft,
LüdenscheidBusch-Jaeger Dürener Metallwerke
Corporation,
Ludenscheid

, ,

Alfred Eppinger, Lüdenscheid,
ist als Erfinder genannt wordenAlfred Eppinger, Lüdenscheid,
has been named as the inventor

gleichgültig ob sie aus Porzellan oder Preßmasse bestehen, wesentlich dünnwandiger. Beim Anziehen der Schrauben kommt es bereits häufig zu übermäßigen Beanspruchungen der Lochbereiche der Sockel, die zum Springen und auch zum Abbrechen derselben führen. Die Gefahr wird um so größer, wenn Überlastungen der Stromkreise auftreten oder ungünstige Kontaktdruckverhältnisse zu Erwärmungen führen, die zusätzliche Spannungen mit sich bringen. Tritt dieser Fall ein, so sitzt das Installationsgerät nicht mehr fest, d. h., die Schraubköpfe der Sicherungselemente können nicht mehr ordnungsgemäß gelöst oder angezogen und die Schalter nicht mehr richtig bedient werden. Es muß ihre Auswechslung erfolgen, was bei dem Preise dieser Geräte und der Tatsache, daß die Tätigkeit nur durch Fachkräfte vorgenommen werden darf, erhebliche Aufwendungen verursacht. Alle diese Nachteile werden erfindungsgemäß dadurch beseitigt, daß der Sockel des Installationsgerätes an seiner Bodenfläche eine nach dort hin offene, quer zur Tragschiene verlaufende, C-förmige Nut aufweist, in die ein metallischer Befestigungssteg eingeschoben ist, dessen die Sockelstirnwand überragende Enden die Befestigungsmittel tragen. Auf diese Weise wird erreicht, daß die auf den Befestigungssteg ausgeübten Anzugskräfte auf eine breite Fläche des Schaltersockels verteilt werden. Der Sockel selbst wird also weniger gefährdet, und esregardless of whether they are made of porcelain or molding compound, they are much thinner-walled. When the screws are tightened, there is often excessive stress on the hole areas of the base, which leads to cracking and breaking of the same. The risk is all the greater if the circuits are overloaded or if the contact pressure conditions are unfavorable and lead to heat build-up that entails additional voltages. If this occurs, the installation device is no longer firmly seated, ie the screw heads of the securing elements can no longer be properly loosened or tightened and the switches can no longer be operated correctly. They must be replaced, which, given the price of these devices and the fact that the activity may only be carried out by skilled workers, causes considerable expense. All these disadvantages are eliminated according to the invention in that the base of the installation device has on its bottom surface a C -shaped groove that is open there and runs transversely to the mounting rail, into which a metallic fastening web is inserted, the ends of which protruding from the base end wall carry the fastening means. In this way it is achieved that the tightening forces exerted on the fastening web are distributed over a wide area of the switch base. So the pedestal itself is less at risk, and it

909 688/327909 688/327

Claims

no parts can break away. The two operating screws can be grasped with a screwdriver outside of the base. The attachment of the fastening bar on the installation device does not cause any difficulties either, because it is only pushed in. He cannot leave his seat after the fastening screws have been inserted because they then act as locking devices. As fastening means, screws can be used which engage in a known manner in a bracket engaging behind the support rail. However, such a bracket can be dispensed with if the nuts lie in C-shaped fastening rails that are open towards the device, which is also known per se. To align the installation devices on the mounting rail or rails, a recess for receiving them can be provided in the floor surface in a known manner. The concept of the invention is independent of such details of the training. In the drawing, the subject matter of the invention is explained using two exemplary embodiments. Fig. 1 and 3 show top views of two exemplary embodiments of self-switch groups, Fig. 2 and 4 side views with a cut-open switch base and Fig. 5 a side view in a direction offset by 90 °, also with a cut-open base. The individual installation devices, here automatic switches, have on their bottom surface 1 ″ a C-shaped groove Ib which is open towards that point and runs transversely to the mounting rail 2, into which a metallic fastening web 3 is inserted, the ends 3 ″ of which protrude over the base end walls, the fastening means , here screws 4, which lead into threaded holes in the bracket 5 engaging behind the mounting rail 2. The inwardly directed edge webs Ic of the C-shaped groove I6 engaging behind the fastening web 3 are interrupted by a recess Id in the central area, which is only slightly wider than the mounting rail 2, which comes to lie in this space and in this way the alignment of a such a group of installation devices 1 causes. The fastening device consisting of the fastening web 3 and the tab 5 as well as the connecting screws 4 is captively connected to the device 1 by the screws 4 inserted. To attach such a switch 1, only one screw 4 is loosened, the tab 5 pivoted to the side until it can be pivoted down again behind the support rail 2 that has penetrated into the recess V1, and the screw is now reinserted and both screws are tightened. The fastening web 3 is therefore fastened to the base of the device 1 without screws, solely by means of a form fit in the base of the base. The tightening pressure of the screws 4 is transmitted to the surrounding areas of the C-shaped groove 1 * over a wide area. Even if a crack occurs and even a part of a groove web Ic breaks off, the quality of the fastening is not impaired because the fastening web 3 is still sufficiently in contact. In the case of smaller groups of such installation devices 1, it is not absolutely necessary for each device to be connected to such a fastening device. In many cases, it will suffice to attach only the first and last piece of a group in this way, ίο when the switches, as in Fig. 1 and 3, are moved close to one another until they come into contact and the known device is used is that the side wall of a device 1 with projections 7 engages lockingly in corresponding recesses 6 of the adjacent device. The embodiment according to FIGS. 3 and 4 differs only in that two C-shaped rails 1 a are used instead of an ordinary support rail 2, the opening facing the devices 1 and receiving the nuts 2 b for the fastening screws 4 in a known manner . Patent claims:

1. Installation device, such as switches, circuit breakers, fuse elements and the like, with a device provided on the bottom of the base for lining up and fastening on one or more mounting rails in switching and distribution systems, characterized in that the base of the installation device (1) on its bottom surface (I ^a ) has a C -shaped groove (I ⁶ ) which is open towards it and which runs transversely to the mounting rail (2) , into which a metallic attachment web (3) is inserted, the ends of which projecting over the base end wall carry the fastening means.

2. Installation device according to claim 1, characterized in that screws (4) are used as fastening means, which engage in a known manner in a bracket (5) engaging behind the support rail (2).

3. Installation device according to claim 1, characterized in that screws (4) are used as fastening means, the nuts (2 ^b ) of which lie in a known manner in C -shaped support rails (2 ") which are open towards the device (1).

4. Installation device according to claim 1, characterized in that a recess (I ^d ) for receiving the support rail (2) is provided in the bottom surface (I ^a ) of the base in a known manner.

Considered. Publications: German Patent Specifications No. 572 732; 690 909, 161;

Austrian Patent No. 24,276; Swiss Patent No. 191 316; French Patent No. 820 398; V&H works sheet No. 575. 4. 37.

1 sheet of drawings