Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – With provision to conduct electricity from panel circuit to...
Patent
1995-02-03
1998-01-13
Bradley, P. Austin
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
With provision to conduct electricity from panel circuit to...
439 78, H01R 909
Patent
active
057072426
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a system or connector/board assembly for the electrical interconnection of component boards having connectors positioned opposite one another on both sides of a board, each connector being secured to its' board and comprises a housing of electrically insulating material provided with a plurality of contact elements of electrically conducting material having a contact end for making contact to a further contact element and a terminal end for connecting electrical wiring, the board being provided with a hole pattern for receiving terminal ends therein.
BACKGROUND OF THE INVENTION
Systems of this type are used in practice, for example, for the stack interconnection of component boards or, for example, for the connection, on a component board, also referred to as mother board or mother panel, of one or more further component boards, also referred to as daughter boards or daughter panels, on both sides. These daughter boards may per se be provided in turn with connectors on both sides for forming a stack of daughter boards or for connecting yet further component boards, also referred to as baby boards or baby panels, thereto.
A system of this type is disclosed, for example, by DE-A-3,323,029 use being made, however, of connectors having projections situated at the end faces of the housing for mounting the respective connector housing on the component board by means of a screw or rivet joint. This manner of mounting the housings on the component board has the disadvantage that, as a consequence of the projections extending laterally from the connector housing for the mounting thereof, it is not possible to mount a plurality of connectors adjacently to one another without loss of a contact element position on the component board. In the English-language literature this is also known as "end-to-end stacking".
A major object of the invention is to provide a system or assembly of the type mentioned above, in particular, having end-to-end stackable connectors mounted sufficiently rigidly on the respective component board.
According to the invention this is achieved in that at least one terminal end of a contact element of the connector situated on one side of the board and at least one terminal end of a contact element of the connector situated on the other side of the board are received in a different hole of the hole pattern, which at least one terminal ends are provided with means for the clamping reception thereof in the respective hole of the hole pattern of the board.
It will be understood that, as more contact elements are provided with such means for clamping mounting in a hole of the hole pattern, the respective connector is secured mechanically more rigidly on the component board. As the dimensions of a connector become greater, it is also advisable to provide more contact elements with clamping means.
It is noted that contact elements having terminal ends provided with means for clamplingly reception in a hole of a component board are, amongst others, disclosed by U.S. Pat. No. 4,232,924. However, using said contact elements in a connector/board assembly having oppositely positioned connectors on each side of a board, such to provide for an end-to-end stackable connector/board assembly of this type, is not disclosed nor suggested by said US patent specification.
In a large number of applications it is common to connect the contact elements of a connector electrically in such a manner that at least one contact element connected to the signal earth or to a supply terminal decoupled to the signal earth is situated between signal-carrying contact elements. This provides an effective electrical shielding between the signal-carrying contacts.
The system according to the invention is suitable, in particular, for connecting connectors having contact elements connected in this manner, for which purpose, in a further embodiment, the component board is provided with one or more mutually electrically insulated wiring layers, the means of a contact element for the cla
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Mitra Niranjan Kumar
Schalk Petrus Wouter Hendrikus
Bradley P. Austin
Wittels Daniel
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