Electrical connectors – Jumper – Having spring biased contact
Patent
1995-02-23
1997-03-18
Paumen, Gary F.
Electrical connectors
Jumper
Having spring biased contact
439709, H02R 3108
Patent
active
056117108
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
The invention relates to a multi-pole plug insert, for example for being fitted in a plug housing comprising a through-aperture for accommodating the plug insert and a flange face for fixing the plug housing to a base plate or to the wall of a switch cabinet, or for being directly attached to holding devices or walls of switch cabinets or the like.
Plug inserts of the above-mentioned type are frequently used for industrial control and regulation purposes. Frequently, a plurality of such plug inserts is arranged in parallel in switch cabinets. The respective plug insert or the respective attachable housing are inserted into the switch cabinet in such a way that plug-in contacts--pins or bushes--to be connected to a counter plug point outwardly, whereas the required wiring is connected on the inside by means of suitable connecting contacts. The connecting contacts may be provided in the form of screwed contacts, flat plug-in contacts, crimped contacts, spring-loaded clamping contacts, soldered contacts or in the form of termi-points (connection for terminal) or wire rap (connection for winding-technical applications).
In such cases, it is frequently necessary to connect a contact pin or contact bush several times, i.e. it becomes necessary to provide multiple wiring for each contact pin or contact bush. It is highly unpractical to achieve this with one single connecting contact, and in the case of soldered connections, this is virtually impossible. In addition, according to VDE and the regulations of the German Federal Railway this is not permitted and industry, substantially, is subject to relevant works standards; at least such connections are not used in practice. Only with soldered connections, in the case of control currents, but not operating currents, double connections of a connecting contact may be made provided the connecting wires were previously provided with soldering lugs.
It is therefore the object of the present invention to provide a plug insert of the initially mentioned type which permits variable multiple connection of each contact pin or contact bush without complicating the connecting operation or adversely affecting operational safety.
The objective is achieved in that the plug insert comprises a first part provided with a first number of contact inserts and a second part provided with a second multiple number of connecting contacts relative to the first number, with each contact insert in the first part being permanently conductingly connected to two connecting contacts in the second part and with the second part, between each two adjoining pairs of connecting contacts each permanently conductingly connected to a contact insert in the first part, being provided with an aperture into which it is possible to clamp a contact bridge which establishes a conducting connection between the two adjoining pairs of connecting contacts.
In an advantageous embodiment, each plug-in contact in the first part is permanently conductingly connected to just two connecting contacts in the second part. This is the most frequently occurring application, so that, hereafter, reference will be made to this application only. It is also possible to deviate from this embodiment in that each plug-in contact in the first part is permanently conductingly connected to a larger number, e.g. four connecting contacts in the second part, if there is a need for such an application. In accordance with the invention, it is also possible, optionally, to produce conductor connections between a larger number of connecting contacts by means of suitable contact bridges. Contact bridges of this type will be described at a later stage.
In an advantageous embodiment, the first part comprises two parallel rows of plug-in contacts and the second part four parallel rows of connecting contacts, each row having the same number of contacts. This arrangement, primarily, concerns attachable housings for 6-, 10-, 16-, or 24-pole plugs. However, the concept of the invention is also applicable to those plugs which, for example,
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patent: 4898549 (1990-02-01), Nakama et al.
patent: 5266043 (1993-11-01), Giroux et al.
HTS Elektrotechnik GmbH
Patel T. C.
Paumen Gary F.
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