Socket soldering contact and contact module for a printed circuit board

A solder socket contact for a printed circuit board, comprising a first contact element and a second contact element, wherein the first contact element has at least one soldering pin which is designed to be soldered to the printed circuit board, the first contact element has a contact region for contacting a plug contact, the second contact element has at least one soldering pin which is designed to be soldered to the printed circuit board, the second contact element has a contact region for contacting the plug contact, and the first contact element and the second contact element form an individual pole for contacting the plug contact.

FIELD

The present invention relates to a socket soldering contact for a printed circuit board and a contact module for a printed circuit board having such a socket soldering contact.

BACKGROUND

Contact modules that are soldered to a printed circuit board, such as contact sockets or base strips, usually have a socket soldering contact for each pole, which consists of a single solder metal. The geometry of this solder metal specifies the position of a plug contact, the arrangement of the soldering contacts and the mounting force required for inserting a plug into a contact area of the solder metal. In this case, it is disadvantageous that such a socket soldering contact is not variable with respect to the aforementioned position of the plug contact, the arrangement of the solder contacts, as well as the required mounting force.

Against this background, the invention is based on the technical problem of specifying a socket soldering contact and a contact module for a printed circuit board, which do not have the preceding disadvantages or have the latter at least in a smaller range, and in particular allow a reliable, variable contact of plug contacts and an easier assembly of plugs to be inserted.

SUMMARY

According to a first aspect, the invention relates to a socket soldering contact for a printed circuit board, having a first contact element and having a second contact element, wherein the first contact element has at least one soldering pin, which is designed for soldering with the printed circuit board, wherein the first contact element has a contact area for contacting a plug contact, wherein the second contact element has at least one soldering pin, which is designed for soldering to the printed circuit board, and wherein the second contact element has a contact area for contacting the plug contact and wherein the first contact element and the second contact element form a single pole for contacting the plug contact.

Due to the at least two-part structure of the socket soldering contact, two contact areas can be specified, which allow contacting of a plug contact. The contacting of a plug contact is therefore more variable and not limited to a single contact area, as it is for example for the case of the socket soldering contact consisting of a one-piece soldering metal.

According to a further embodiment of the socket soldering contact, it is provided that the contact area of the first contact element has a local narrowing for the form-locking and/or force-locking reception of the plug contact, wherein the contact area of the second contact element has a local narrowing for the form-locking and/or force-locking reception of the plug contact and wherein the local narrowing of the first contact element, viewed along an insertion direction of the plug contact, has a local offset relative to the local narrowing of the second contact element.

By the offset of the narrowing of the contact area of the first contact element compared to the narrowing of the second contact element, the mechanical resistance of the socket soldering contact against an inserting of a plug can be reduced in that the plug to be introduced, viewed along the insertion direction, first passes along a further narrowing and then hits the further narrowing.

According to a further embodiment of the socket soldering contact, it is provided that the contact area of the first contact element has at least two free projecting webs, wherein the local narrowing of the first contact element has at least one contact nib provided at a web and wherein the contact nib at least in sections extends in the direction of the other web and wherein the contact area of the second contact element has at least two free-projecting webs, wherein the local narrowing of the second contact element has at least one contact nib provided at a web and wherein the contact nib extends at least in sections in the direction of the other web, and wherein the contact nib of the first contact element, viewed along an insertion direction of the plug contact, has an offset relative to the contact nib of the second contact element.

The contact nibs can cause a defined contact of a plug contact. Since the contact nibs are arranged offset along the insertion direction relative to each other, a plug contact of a plug can abut in the finished mounted condition on the contact nib of the first contact element and/or on the contact nib of the second contact element.

The projecting webs can be formed as spring arms, which are designed to abut an associated plug contact being clamped in a spring-elastic manner Such a spring arm can be deflected by inserting a plug on an upper surface of the plug sliding transversely to the insertion direction of the plug or the plug contact and thus be clamped against the plug contact in a spring-elastic manner. In this way, a simple, reliable and damage-free detachable contact can be achieved between a plug contact and the socket soldering contact.

It may be provided that the local narrowing of the first contact element has two contact nibs facing each other, which are formed at the webs of the first contact element. Alternatively or additionally, it may be provided that the local narrowing of the second contact element has two contact nibs facing each other, which are formed at the webs of the second contact element. Thus, a two-sided contact of a plug contact can be effected.

According to a further embodiment of the socket soldering contact, it is provided that the local narrowing of the first contact element is provided at the end in the area of the free web ends of the webs of the first contact element. Alternatively or additionally, it may be provided that the local narrowing of the second contact element is provided at the end in the area of the free web ends of the webs of the second contact element. In this way, a compact design and a reliable contact of a plug contact can be achieved.

According to a further embodiment of the socket soldering contact, it is provided that at least one of the webs has a resting protrusion for locking in a plastics material housing of a contact module, wherein the resting protrusion is arranged in particular on a side of the web facing away from the contact nib. A resting protrusion may be designed to engage from behind into a recess, a protrusion, or a back cut of the plastics material housing of the contact module, or to abut a stop formed on the plastics material housing, in order to secure the plastics material housing of the contact module in a form-locking and/or force-locking manner against pulling or losing in the opposite direction to the insertion direction.

According to a further embodiment of the socket soldering contact, it is provided that the soldering pin of the first contact element has a crank in the direction of the second contact element, that the soldering pin of the second contact element has a crank in the direction of the first contact element, and that from the respective crank, projecting free ends of the soldering pins are lined up in an aligned, comb-like manner, when viewed along an insertion direction of the plug contact. In this way, a compact design of the socket soldering contact can be achieved.

It may be provided that the first contact element has at least two soldering pins, in particular exactly two soldering pins, that the second contact element has at least two soldering pins, in particular exactly two soldering pins, wherein at least one soldering pin of the first contact element, in particular exactly one soldering pin of the first contact element, is arranged between two soldering pins of the second contact element and wherein at least one soldering pin of the second contact element, in particular exactly one soldering pin of the second contact element, is arranged between two soldering pins of the first contact element. Thus, a compact design of the socket soldering contact can be achieved by choosing a very narrow distance between the comb-like interconnected soldering pins with the same current capacity and in particular is not predetermined by punch-technically caused minimum distances.

According to a further embodiment of the socket soldering contact, it is provided that the first contact element and the second contact element at least partially abut each other in a gap-free manner. In this way, a compact design of the socket soldering contact can be achieved.

Alternatively or additionally, it may be provided that the first contact element and the second contact element are interconnected at least partially in a material-locking and/or adhesive and/or form-locking, and/or force-locking manner. This allows a reliable abutment of the first contact element and the second contact element to be achieved.

According to a second aspect, the invention relates to a contact module for a printed circuit board, having a plastics material housing, having at least one receiving opening for inserting a plug, and having at least one socket soldering contact associated to the receiving opening and received in the plastics material housing, wherein the socket soldering contact is formed according to the invention.

The at least two-part structure of the socket soldering contact serves to contact a single pole of a plug contact. In the fully assembled state of a plug, a separate two-part socket soldering contact is therefore assigned to each pole of the plug. A contact module can therefore have a plurality of two-part socket soldering contacts, each assigned to a pole.

The contact module can be a base strip or a contact socket, each of which is designed for soldering to a printed circuit board.

Insofar as soldering pins are cranked in the manner described above, the required standard distances of adjacent poles can be complied with on a confined construction space.

DETAILED DESCRIPTION

FIG. 1shows a socket soldering contact2for a printed circuit board. The socket soldering contact2has a first contact element4and a second contact element6.

The position of the first contact element4shown inFIG. 1relative to the second contact element6describes the socket soldering contact2in the finished mounted state, soldered on a printed circuit board. In the finished mounted state shown inFIG. 1of the socket soldering contact2, the first contact element4and the second contact element6abut each other in a gap-free manner.

FIG. 2shows the contact element4and the contact element6each separately in individual representations to clarify the structural embodiment of the contact elements4,6forming the socket soldering contact2.

The first contact element4has a first soldering pin8and a second soldering pin10. The soldering pins8,10of the first contact element4are designed for soldering with a printed circuit board.

The first contact element4has a contact area12for contacting a plug contact.

The second contact element6has a first soldering pin14and a second soldering pin16. The first soldering pin14and the second soldering pin16of the second contact element6are designed for soldering with a printed circuit board.

The second contact element6has a contact area18for contacting a plug contact.

The first contact element4and the second contact element6form a single pole for contacting the plug contact.

The contact area12of the first contact element4has a local narrowing20. The local narrowing20of the first contact element4is provided for the form-locking and/or force-locking reception of the plug contact. The contact area18of the second contact element6has a local narrowing22. The local narrowing22of the second contact element6is provided for the form-locking and/or force-locking reception of the plug contact. The local narrowing20and the local narrowing22are arranged offset to each other along an insertion direction R of the plug contact.

The contact area12of the first contact element4has two free-projecting webs24,26. The local narrowing20of the first contact area12is formed in the present case by two contact nibs28,30. Here, the contact nib28extends in the direction of the web26. The contact nib30extends in the direction of the web24.

The local narrowing22of the contact area18of the second contact element6is formed by contact nibs32,34facing each other, which are provided at projecting webs36,38of the contact area18of the second contact element.

The contact nibs28,30of the first contact element and the contact nibs32,34of the second contact element6are arranged, viewed along the insertion direction R, offset to each other.

The local narrowing20or the contact nibs28,30are arranged at the end in the area of the free web ends of the webs24,26. Similarly, the local narrowing22, which is formed by the contact nibs32,34, is provided at the end in the area of the free web ends of the webs36,38. At each web24,26,36,38, a resting protrusion40is provided for locking a plastics material housing62of a contact module58(FIG. 3A).

Each resting protrusion40is arranged on a side facing away from the respective contact nib28,30,32,34of the respective free web end of the assigned web24,26,36,38.

The soldering pins8,10of the first contact element4each have a crank42,44in the direction of the second contact element6. The soldering pins14,16of the second contact element each have a crank46,48in the direction of the first contact element4. From the respective crank42,44,46,48, projecting, free ends50,52,54,56of the soldering pins8,10,14,16are lined up in an aligned, comb-like manner along the insertion direction R of the plug contact.

The soldering pin10of the first contact element4is arranged between the soldering pins14,16of the second contact element6. The soldering pin14of the second contact element6is arranged between the soldering pins8,10of the first contact element4.

FIGS. 3A, 3B, and 3Cshow a contact module58according to the invention for a printed circuit board60. The contact module58has a plastics material housing62, having at least one receiving opening64for inserting a plug. The contact module58has at least one socket soldering contact2assigned to the receiving opening64and received in the plastics material housing62, wherein the socket soldering contact2is formed according to theFIGS. 1 and 2in a manner according to the invention.

REFERENCE NUMERALS

2socket soldering contact

4first contact element

6second contact element

60printed circuit board

62plastics material housing