DE2161240B1

DE2161240B1 - Fixing element for devices

Info

Publication number: DE2161240B1
Application number: DE19712161240D
Authority: DE
Inventors: Ulrich 8450 Amberg Hruschka; Heinz-Dieter 8451 Kuemmersbruck Muench
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 1971-12-10
Filing date: 1971-12-10
Publication date: 1973-05-30
Also published as: DE2161240C2

Description

Das Befestigungselement für Geräte an einer Montagewand besteht aus der Hülse, die mit einer seitlich zu ihrer Längsachse sich erstreckenden Anformung 2 versehen ist. Ein Haltestift 3 ist, wie die F i g. 4 und 5 zeigen, mit der Hülse 1 einstückig verbunden, wobei die Verbindungsstege 4 beim Einbringen des Haltestiftes 3 in das Innere 5 der Hülse 1 zerreißen. Teile zunehmender Wandstärke 6 liegen, wie Fig. 1 durch die gestrichelt angegebene Montagewand 7 darstellt, in deren Bereich. Die Teile zunehmender Wandstärke der Hülse 1 sind als streifenförmige Zungen ausgebildet. Die Hülse 1 bzw. die Anformung 2 ist mit einer Aussparung 8 versehen, in die Teile von Geräten, Leiterplatten 9, eingeschoben werden können. Die Ecken 10 der Leiterplatten 9 sind von den Aussparungen 8 umgriffen. Um eine Grobfixierung der Befestigungselemente an den Leiterplatten9 zu erreichen, sind Rastnasen 11 im Inneren der Aussparung8 angeordnet, die in eine Ausnehmung 12 der Leiterplatte 9 einrasten. Die Fig.6 zeigt die Befestigung zweier Leiterplatten 9 unterschiedlicher Größe, wobei im Trennbereich zur Halterung der Leiterplatten 9 die Hülsenl mit Anformungen 12 ausgestattet sind, die mit zwei im Winkel von 900 zueinander liegenden Aussparungen 8 ausgebildet sind. Auch hier sind jeweils Rastnasen 11 in den Aussparungen vorgesehen. Es ist somit möglich, eine Reihe von Leiterplatten bereits vor Befesti- gung an der Montagewand 7 miteinander zu verbinden und erst hiernach die Befestigung vorzunehmen. The fastening element for devices on a mounting wall consists of the sleeve, which has a projection extending laterally to its longitudinal axis 2 is provided. A retaining pin 3 is, as shown in FIG. 4 and 5 show with the sleeve 1 connected in one piece, the connecting webs 4 when inserting the retaining pin 3 tear into the interior 5 of the sleeve 1. Parts of increasing wall thickness 6 are located, as FIG. 1 shows by the mounting wall 7 indicated by dashed lines, in the area thereof. The parts of increasing wall thickness of the sleeve 1 are designed as strip-shaped tongues. The sleeve 1 or the projection 2 is provided with a recess 8 into the parts of devices, printed circuit boards 9, can be inserted. The corners 10 of the circuit boards 9 are encompassed by the recesses 8. To a rough fixation of the To achieve fastening elements on the printed circuit boards 9, locking lugs 11 are inside the recess 8, which snap into a recess 12 of the circuit board 9. 6 shows the attachment of two circuit boards 9 of different sizes, wherein in the separating area for holding the circuit boards 9, the sleeves with projections 12 are equipped with two recesses lying at an angle of 900 to one another 8 are formed. Here, too, locking lugs 11 are provided in the recesses. It is thus possible to install a number of printed circuit boards before they are at the To connect mounting wall 7 to each other and only then to make the attachment.

Die Hülse 1 ist mit einem ringförmigen Ansatz 13 versehen, der als Anlage des Befestigungselementes auf der Montagewand 7 dient. Hierdurch ist es möglich, auf einfache Weise die Leiterplatten 9 im Abstand zur Montagewand 7 zu befestigen. In die Hülsenl im oberen Teil des Ausführungsbeispiels nach den F i g. 6 und 7 sind zylinderförmige Haltestifte 3 beispielsweise mit einem Hammer eingeschlagen, so daß sich die Teile zunehmender Wandstärke 6 hinter der Montagewand 7 aufspreizen. Diese Befestigung reicht im allgemeinen aus. The sleeve 1 is provided with an annular extension 13, which as System of the fastener on the mounting wall 7 is used. This makes it possible to fasten the circuit boards 9 at a distance from the mounting wall 7 in a simple manner. In the Hülsenl in the upper part of the embodiment according to FIGS. 6 and 7 are cylindrical retaining pins 3, for example, hammered in with a hammer, so that the parts of increasing wall thickness 6 spread open behind the mounting wall 7. This attachment is generally sufficient.

Claims

Claims: 1. Fastening element for devices on a mounting wall, consisting of a sleeve with at least areas adjoining the mounting wall increasing wall thickness, which with a retaining pin that can be inserted into the sleeve in a non-positive manner Connection can be brought, d a d u r eh characterized that the sleeve (1) or a Formation (2) on this at least one substantially transverse to its longitudinal axis lying slot-shaped recess adapted to parts of the device (9) to be fastened (8) has.

2. Element according to claim 1, characterized in that the to be fastened Device is a printed circuit board (9) of an electronic assembly.

3. Element according to claim 1 or 2, characterized in that in the recess (8) clamping or locking parts (11) are provided for the device (9).

4. Element according to claim 2 or 3, characterized in that two at an angle of about 900 to one another, encompassing the corners of two circuit boards (9) Recesses (8) are provided.

5. Element according to any one of the preceding claims, characterized in that that the sleeve (1) with shoulders (extension 13) for the spacer bracket of the device (9) from the mounting surface (7) is provided.

6. Element according to one of the preceding claims, characterized in that that the areas of increasing wall thickness (6) extend in the longitudinal direction of the sleeve (1) strip-shaped tongues are provided.

The invention is based on a fastening element for devices a mounting wall consisting of a sleeve with at least one adjacent to the mounting wall Areas of increasing wall thickness with a retaining pin that can be introduced into the sleeve can be brought into frictional connection.

For connecting two panels, a fastener is the one mentioned above Type known (German utility model 1 907 629), the sleeve of which by superimposed, matched through holes of the two plates is guided and through Introducing the retaining pin with this comes into force-locking connection and a Holds the two plates together causes. This known fastener requires a relatively exact match of the fastening openings of each other to be connected parts, so that either the holes only at the moment of connection must be introduced, or relatively small tolerances in the prefabrication must be required.

The object of the invention is to provide fastening elements of the by the German utility model 1 907 629 known type in this respect to improve that in a simple way the stabilization of devices with relatively large Tolerances in relation to the mounting dimensions is possible.

It is used for fork channels made of U-profiles with slotted legs became known, at the end of this leg adapted to a cover to be inserted Provide recesses.

This is based on a fastening element of the type mentioned above achieved in a simple manner that the sleeve or an integral part of this at least a substantially transverse to its longitudinal axis, slit-shaped parts of the to be fastened device has adapted recess.

The parts of the device to be fastened can for example be flange parts be an electrical switching device to be attached to a mounting wall, wherein with a corresponding design of the increasing wall thickness advantageously also a bracing of the device with the mounting wall can be achieved.

The fastening element according to the invention is of particular importance, if the device to be fastened is a printed circuit board of an electronic assembly is.

To fix the fasteners before inserting them into the mounting wall To be able to hold roughly on the device, it is advantageous if clamping or in the recess Locking parts are provided for the device.

Several adjacent devices or circuit boards can easily attached when two at about 90 degrees to each other lying, the corners of two circuit boards encompassing recesses are provided. In the case of printed circuit boards in particular, it can be advantageous if the sleeve has shoulders to keep the device at a distance from the mounting surface. The elasticity the sleeve parts with increasing wall thickness is significantly improved if the Areas of increasing wall thickness on strip-shaped strips running in the longitudinal direction of the sleeve Tongues are provided.

An exemplary embodiment according to the invention is illustrated with the aid of the drawing described and the fastening option explained in more detail. It shows F i g. 1 one Side view of the fastening element, FIG. Figure 2 is a plan view of the element according to Fig. 1, Fig. 3 a view from below of the element according to Fig. 1, F i g. 4 a Sectional view along the line IV-IV through the element according to FIG. 1, Fig a sectional view along the line V-V according to FIG. 2 and FIG. 6 and 7 forelegs and side view of printed circuit boards attached to a mounting wall.