Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – Distinct contact secured to panel circuit
Patent
1996-08-20
1998-11-10
Abrams, Neil
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
Distinct contact secured to panel circuit
H01R 909
Patent
active
058334750
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an electrical connector, comprising a housing of electrically insulating material with a connection side and a contact side, and provided with a number of contact elements of electrically conducting material accommodated in channels and, each with a contact end situated at the contact side of the housing, for contacting a further connector. and a connection end provided with an L-shaped connection pin, having a fixed leg fixed to the connection end of the contact element extending from the connection pin output side of the housing lying opposite the contact side, a bend and a free leg for mounting on a printed circuit board substantially perpendicular to the fixed leg and extending to beyond the connection side of the housing running at right angles to the connection pin output side, and comprising a bending anvil having a curved bending face for bending the connection pins to an L-shape.
So-called rectangular connectors, i.e. connectors with rectangular connection pins, are often asked for by consumers, in particular connectors with a small pitch distance. This makes it difficult to maintain the correct positions of the parts of the connection pins over the entire length of the connectors not only during manufacture, but also during packaging and transportation, in order to permit correct positioning of the soldering ends of the connection pins relative to holes in a printed circuit board. Additional complications are the curvature of the printed circuit board, and the correct position of the soldering ends of the connection pins, in particular when there is a small pitch distance, which is, of course, associated with holes of small diameter.
Another problem encountered in the production of the above-mentioned connectors with small pitch distance is accurate bending of the connection pins at right angles, in order to achieve the correct position of the soldering ends of the connection pins here.
In this connection it is observed that the invention pertains to a right-angle connector for miniaturized connector for high I/O applications. The right-angle tail is an extension of the terminal contact, and is of thin-stock (rectangular 0.35.times.0.15 mm width: thickness) material. By virtue of the close mutual spacings of tails 1.27.times.1.27 mm), end due to its slender configurations, without additional means such tails can be skew With large true-position in accuracy of pin-tip with respect to the theoretical 1.27.times.1.27 mm raster, even before the 90.degree. bending. This situation becomes more aggravated after the bend. Such miniature connectors due to the delicate tails, results in in-advertent problems during placement on PC Boards.
Right-angle connectors are known from the U.S. Pat. Nos. 5,112,234 and 5,032,085 but in contrast to present invention these prior art reference pertain to relatively thick-stock material with round cross-section of tail. The U.S. Pat. No. 4,697,864 seems to pertain to connectors slightly corresponding to the connector of the invention. However, all the tails known from the prior art references are un-supported and free standing in air in the area of 90.degree. bend zone.
The object of the invention is to provide an electrical connector of the type mentioned in the preamble, in which the above-mentioned problems are avoided and the connection pins can be bent in a simple and accurate way at such a right angle that the correct position of the connection ends of the connection pins is maintained even after the bending action and during transport.
Another aim of the inventor was to facilitate the fitting of the connector on printed circuit boards.
This object and aim are achieved according to the invention through the fact that the bending anvil is separated from the connector housing and is provided with a positioning element of electrically insulating material between the connection pin output side and the bending anvil, said positioning element has bores extending perpendicular to the plane of the connection pin output side of the connector housing
REFERENCES:
patent: 4697864 (1987-10-01), Hayes et al.
patent: 4734042 (1988-03-01), Martens et al.
patent: 5593307 (1997-01-01), Bale et al.
Abrams Neil
Berg Technology Inc.
Long Daniel J.
Page M. Richard
Patel T. C.
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