DE7422768U - Solderless electrical connection - Google Patents

Description

2nd July 1974

KONTAKTRON GMBH

7107 Bad-Friedrichshall

Siemensstrasse 5

Solderless electrical connection

The novelty relates to an electrical connection for printed circuit boards, primarily for "multi-layer" Circuit boards and multilayer printed circuit board assemblies. The connection is through Embossed knife or spring contacts made. the other The end is designed in such a way that further wiring can be carried out using "Wire-Wrap", "Tsrmi-Point" technology or other methods is possible.

Such contacts are often used on circuit boards Arranged printed circuits via male or female connectors with other printed circuit boards, which are interchangeable, electrically connectable.

On the other side of the circuit board, the protruding contacts with a variable, through Wires made circuit, connected; what happens with the well-known "Wire-Wrap", "Termi-Point" and so on.

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In almost all cases the contacts are in the one or multilayer * printed circuit boards soldered in. this done by hand with a soldering iron, with soldering rings or by means of a solder wave bath.

The disadvantage of this process is that it involves high temperatures must be worked. This leads to stress in the circuit boards. These tensions cause bending of the circuit boards and often cracks the thin circuit lines on the printed circuit boards. These cracks make the expensive circuit boards unusable.

Another disadvantage of soldering is the contamination of the protruding contacts with solder residue, which can lead to malfunctions with variable wiring.

The novelty is based on the task of being an electric connection with single or multi-layer circuit boards create in which the disadvantages of the soldered connection are excluded.

This object is achieved according to the novelty in that the plated through holes of the printed circuit boards be provided with a thick, soft, chemical or galvanic surface, in which the contact in its special embossed zone makes contact with the printed circuit by surface or edge pressure.

The embossing on the contacts makes it accurate and smooth Zone created that ensures the firm hold in the printed circuit board.

The contacts can be made from profile wire and be pressed into the printed board by hand or with a pick and place machine. The contacts are also beneficial punching and embossing from a ribbon and attaching it to the punching strip, which is broken off after insertion.

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To protect the contacts from damage, an insulating body can be slipped over the contacts and held by the contacts or attached to the printed circuit board . By designing the insulating body with a collar, web or the like, a demonstration of the mating connector can be achieved.

The novelty is also an arrangement in which the contacts are previously mounted in an insulating body and together with the insulator pressed into the printed circuit board. The insulating body is designed in such a way that that the holder of the contacts in the insulator is relatively far from the top of the printed Plate is so that there are tolerance differences between the holes in the printed board and the brackets in the insulator can compensate.

Further features and advantages of the novelty emerge from the following description of exemplary embodiments the drawing. It shows:

Pig. 1 with a contact arrangement designed as a plug part in a "multi-layer plate" (1) an insulating body (2) which has mounting brackets (3) for the knife (4) that compensate for tolerances.

2 shows a contact arrangement designed as a spring element 1 in multilayer individual printed circuit boards (5) without an insulating body.

3 shows an example of an embossing (6) with edge pressure (7).

4 shows an example of an embossing (6) with surface pressure (S).

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Pig. 5 an example of a punched and embossed (6) contact with edge pressure (7),

6 shows an example of a contact arrangement with

Demonstration (9) and replaceable printed board (10) xnit giving fceeker (11).

Fig. 7 shows an example of a Kentakt arrangement with punched and embossed contacts (12) with breakable punched strips (13).

Claims (5)

Protection claims 1. Electrical contact arrangement with a number with rear contact connection profile (10) and front term contact points (15) provided contacts, which are pressed into circuit boards (1, 5), characterized in that at least a test (6) is provided, - the edge (7) or surface pressure (8) with the plated through Holes (16) of one, several or "multi-layer" circuit boards makes contact. 2. Contact arrangement according to claim 1, characterized in that the contacts for the galvanic treatment and are attached to punched strips (13) or magazine tapes for assembly. 3. Contact arrangement according to claim 1, characterized in that the contacts in with tolerance compensating Brackets (3) provided insulating body (2) are preassembled. 4. Contact arrangement according to claim 1, characterized in that g e k e η η draws ^ that the insulating body (2) with or without a special attachment (17) subsequently over the depressed Contacts can be plugged. 5. Contact arrangement according to claim 3 or 4, characterized in that the insulating body is provided with one or more demonstration / s (9) for receiving the counter- contact arrangement (11).