Electrical connectors – Electromagnetic or electrostatic shield – Multi-part shield body
Patent
1993-06-15
1994-10-11
Nguyen, Khiem
Electrical connectors
Electromagnetic or electrostatic shield
Multi-part shield body
439701, 439 79, H01R 13648
Patent
active
053542193
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a multipolar, screened connector having a common earth and comprising a male part and a female part, wherein the male part includes a body manufactured from an electrically insulating material and having parts which are adapted to the female part and which at least partially surround said part, and further comprising rows and columns of connector pins which extend through the base part of the body parallel with said surrounding parts, and wherein the female part includes a body which is manufactured from an electrically insulating material and which is adapted for insertion between the surrounding parts on the male-part body and is provided with hole-parts into which the pins on the male-part fit and from which channels extend for the accommodation of contact lines or conductors extending from contact devices to said pins.
BACKGROUND ART
Screened, multipolar connectors of this kind are known to the art. The screen is constructed from metal plates which are inserted in slots in the female-part body between the rows of holes and connection-line channels. The plates are also coated with an insulating material, in some cases. The plates are mutually connected electrically and to earthing means, such as to form a screen around the female part. The drawback with constructions of this kind is that they include a relatively large number of separate components which render the task of assembling the connector both complicated and time-consuming. Furthermore, the screen on the female part does not extend fully around said part and is totally lacking on the male part. Consequently, signals that are transmitted via these connectors are liable to be subjected to disturbances, particularly in the case of high frequency signals.
In the case of another earlier known constructions, the female part comprises a plurality of screening metal-plate profiles which are coated with insulating material. Electrical contact devices and contact lines are disposed between the plates and the profiles. This construction is also relatively complicated as is also the task of assembling the connector. This connector also lacks a fully encircling screen, and the male part also lacks the provision of a screen.
Fully screened devices, in the form of coax-devices, however, are known to the art. These devices, however, have only one conductor, i.e. they are unipolar.
DISCLOSURE OF THE INVENTION
The object of the present invention is to avoid the drawbacks associated with earlier constructions of connectors of the aforesaid kind and to provide a multipolar connector which has the same good screening properties as a coax-device, which has a simple and purposeful construction, which can be readily assembled, and which is fully screened around both the female part and the male part of said connector. This object is achieved with the connector having the characteristic features set forth in the following claims.
A screened connector constructed in accordance with the invention affords primarily the advantage of being totally screened, both with respect to the male part and the female part, and makes possible the disturbance-free transmission of high frequency signals. Furthermore, the connector can be manufactured and assembled in a simple manner, because it comprises only a few components.
The invention will now be described in more detail with reference to a preferred exemplifying embodiment thereof and also with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a first embodiment of the inventive connector and shows the connector in an assembled state;
FIGS. 2 and 3 illustrate respectively the male part and the female part of the connector;
FIGS. 4 and 5 illustrate in perspective various plates forming part of the female part;
FIG. 6 is a sectional view through the assembled connector;
FIG. 7 is a perspective view of a second embodiment of the inventive connector and shows said connector in its assembled state;
FIG. 8 illustrates the
REFERENCES:
patent: 4193654 (1980-03-01), Hughes et al.
patent: 4210376 (1980-07-01), Hughes et al.
patent: 4975084 (1990-12-01), Fedder et al.
patent: 5009616 (1991-04-01), Fogg et al.
patent: 5169343 (1992-12-01), Andrews
patent: 5261829 (1993-11-01), Fusselman et al.
Nguyen Khiem
Vemako AB
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