Untitled record

HARTING ELEKTRONIK GmbH

Marienwerder Straße 3

4992 Espelkamp

20.05.1988 13 / 88-09

Λ ^ Ι / i / Λ ^ Κ ί ns4 «\ v * -» ι ιν »Dnf net ΐ nt inn on I λ ί Ί ii» * r \ 1 al · + απ

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The innovation relates to a connector for attachment to printed circuit boards, wherein the connector has a contact elements-containing support body whose facing the circuit board connections to tracks of the circuit board are connected by soldering and wherein the connector is provided with metallic fastening, igungswinke In, one leg on the Träqerkörper respectively. a metal housing which surrounds the carrier body is fastened and whose other leg rests on its surface when the connector is placed on the printed circuit board.

In the manufacture of printed circuit boards provided with printed circuit boards, the printed circuit boards are equipped in separate operations, that is provided with components and the one or more connectors mounted, and in a solder bath, the components are soldered, ie their An-conclusions connected to the tracks of the circuit board. It is necessary that the connectors are already so firmly connected to the circuit board during the insertion process (first operation) that they maintain their position even in subsequent work and transport operations.

In addition, it is finally necessary that the connectors are connected in total so or so firmly to the circuit board, that in normal insertion and pulling operations of the mating connector, the forces are not transmitted via the Kontaktanschiüsse, but via additional fasteners on the circuit board.

In general, the attachment of the connector to the circuit board via mounting bracket, which are screwed or riveted on the one hand to the connector and on the other hand

have a support leg for support on the circuit board top, which is provided with a mounting hole and here screwed or riveted to the circuit board.

However, this in itself safe and reliable way of attaching connectors to PCBs is problematic and it consuming operations are necessary when mounting the connector and its attachment to be made in automated manufacturing facilities.

The novelty is now based on the object, a connector for attachment to printed circuit boards or its fastening means in such a way that the connector with little effort, but can be reliably mounted on circuit boards in automatic manufacturing ZBestückungsanlagen, this attachment a secure hold of the connector the PCB should cause before the actual soldering. The fasteners should be as simple, with regard to different PCB thickness ggfls. easily modifiable parts may be formed, which can be applied to commercially available, stock existing connectors.

This object is achieved in a progressive manner in that the connector is provided with mounting brackets, the support legs are provided with angled ends which are pressed into provided in the circuit board mounting holes. Further advantageous embodiments of the innovation are specified in claims 2 to 9.

The advantages achieved with the innovation are in particular that commercial or stock existing connectors without having to make these changes, instead of with. the previously used L-shaped mounting brackets for screw / rivet mounting with the renewal trained mounting brackets are provided and then can be mounted detent on printed circuit boards. The assembly of the connector can easily be done in automatic processing or Placement systems are made. In this case, a secure attachment to the circuit board is guaranteed and

After the soldering process of the circuit board is ensured by soldering the projecting into the PCB bore end of the angle with the hole or PCB metallization, the same fastening security as in conventional screw or rivet fastener. If the connectors have a metallic shielding housing to which the mounting bracket according to the invention then be attached, then at the same time a continuous, perfect ground connection on the metallic angle with the Bohrungsbzw. PCB metallization after the soldering process available. An embodiment of the innovation is shown in the drawing and will be explained in more detail below. Show it

1 is a view of a connector with mounting brackets,

mounted on a printed circuit board, Fig. 2 views of the mounting bracket acc. Fig. 1 in different directions, and

Fig. 3-6 each views from different directions of modified mounting brackets.

In Fig. 1, a connector 1, which is mounted on a printed circuit board, is shown, wherein due to the better recognizability of details, a part of the circuit board is broken away. The connector consists essentially of a carrier body made of insulating material, in which the contact elements 4 are held, wherein the carrier body is inserted here in a metallic housing 5. The contact elements are provided with solder terminals / solder pins 6, which are inserted into holes in the circuit board and soldered here to the continuing conductor tracks 7. For connectors in so-called. SMD technology can also be provided that the solder terminals of the contact elements are not plugged into circuit board holes, but rest only on the tracks and are then soldered to them. Of course, the conductor tracks 7 are then correspondingly on the other side of the printed circuit board shown.

The housing 5 is provided with lateral flanges 8, offered to the mounting bracket 9 or ggfls. also screwed on. The mounting bracket, shown in FIG. 2 as a single part

are, have a first leg 10 which is provided with a bore 11 and which is carried on this leg attachment to the housing. The other leg 12, which rests after placing the connector on the circuit board on this and hereinafter referred to as a support leg is provided with an angled end 13 which is pressed into the bore 14 of the circuit board. This hole is of a metallization ijmnohon. where appropriate. aijrh rlip Rnhriingswändp with. P.inp.r metallization can be provided.

After the soldering process (soldering the connector terminals, components, etc.), the angled ends 13 are firmly connected to the circuit board / soldered, in which case in addition to the mechanical attachment and a continuous electrical connection from the metallic housing to the PCB metallization is present.

For latching pre-assembly of the connector to the circuit board, the angled ends 13 are provided with a slot 16 and thus formed spring arms 17 are further formed with outwardly facing latching shoulders 18, after pressing the angled end 13 and the spring arms 17 in the PCB bore 14 behind the underside of the circuit board.

To facilitate the insertion of the spring arms in the circuit board hole these are provided with chamfers 19. With a view to the greatest possible stability of the mounting angles, these are punched out of a relatively thick, stiff strip material and bent. On the other hand, since the angled end or the spring arms 17 "should have ciarelastic properties, the support legs 12 are provided in this tndbereich with a reduced thickness of the material. Preferably, a so-called stepped belt is used to produce the attachment angles, which then has a reduced thickness in the end region of the support legs. In order to increase the stability of the mounting bracket or the connector mounted on the printed circuit board, the support leg 12 in the end region is provided with extended support ends which extend beyond the angled end 13.

As can be seen from the plan view of the mounting angle in Fig. 2, the end portion of the support legs is punched out of the step band in the region of reduced thickness, wherein on the one hand

the contactor 16 formed between the spring arms and on the other ί lateral freestanding 21 were made. In this case, the spring arms 17 in this illustration are prior to their bending around the bending line 22 | in the final position, shown in phantom and after their | Bending they are in the position shown in the side view, I spaced from the support end 20 position / position. ί In the views of FIG. 3 a similarly trained mounting angle is shown, wherein like parts are provided with the same reference numerals as in the embodiment described above, the 'supply, supply angle. In this embodiment, to achieve ί a greater stability of the support leg 12 lateral Be rich 23 this leg bent up, so that the leg is seen insge 'together U-shaped. ^

Finally, in the views of FIG. 4, a further design i possibility of the mounting bracket is shown, in which case also the spring arms are punched out at the end of the support leg, after punching a part of this end portion but initially bent back by 180 ° and finally the Spring arms are angled even 90 ° downwards.

All of the above-described variants of the mounting bracket have the common feature that the spring arms 17, that is, the suspension run transversely to the direction of the support leg 12. In general

extends the achieved with such mounting brackets stability of the connector attachment completely to intercept axial insertion and removal forces when inserting / removing a mating connector. For mechanically very stressed - frequent plugging and pulling operations - connectors, it may be appropriate to the spring

arms, ie provide their locking shoulders / suspension along the direction of the support leg 12. Such embodiments of mounting brackets are shown in Figs. 5 and 6. In the execution acc. 5, the mounting bracket with the spring arms formed thereon is likewise made of a stepped belt.

punched and bent, wherein the spring arms having the end of Auflaae- leg 12 along the approximately central bending line 24,

along the support leg is bent so that the spring arms and their suspension extend longitudinally to the leg. With this embodiment of the mounting bracket occurring tilting moments can be better absorbed by the spaced successive mounting points / locking shoulders of the spring arms tilting moments.

Finally, in the execution acc. Fig. 6 is still provided, j 'ate behind the spring arms 17 having the end of the support leg 12 is still an additional support arm 25 is formed, which comes after the onset of the spring arms of the mounting bracket in the circuit board hole on the circuit board surface to support and an additional, the stability of the assembled connector further increasing support of the support leg causes.