Geometrical instruments
Patent
1980-06-18
1982-10-05
McGlynn, Joseph H.
Geometrical instruments
339 17LC, 339 75MP, H05K 100
Patent
active
043525334
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND
The present invention relates to a connector device for printed boards which are, for example, attached to shelf devices in telecommunication apparatuses.
BACKGROUND ART
There are known connector devices for connecting printed boards to a backboard or a backpanel of a shelf device which is usually in the form of a box-shaped frame. In a known connector device, there are provided a series of male or female connectors on one end of a printed board which is to be electrically connected to a backpanel and a series of female or male connectors on a surface of the backpanel that is opposed to the one end of the printed board, so that when the printed board is inserted into the shelf device toward the backpanel thereof, the connectors of the printed board can be engaged by and connected to the corresponding female or male connectors of the backpanel in a so-called "plug-in" way.
The packaging density of printed boards has been increasing, resulting in an increase in the number of input and output signals and accordingly in an increase in the number of pins or terminals of a connector. As a result, the increased number of connector pins or connector terminals cannot be arranged on one end of the printed board. In order to solve this problem, there has been proposed a printed board which is provided, on its opposite ends, with a series of male or female connectors. The provision of such a printed board is followed by the provision of a pair of printed boards which are identical to the backpanel and which are called mother boards located opposite to the opposite ends of the first mentioned printed board, usually called a card or a daughter board.
However, in a conventional known connector device for establishing the electrical connection between a mother board and a card, the connecting and disconnecting operations are relatively difficult and cannot be easily effected.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide a connector device for a pair of printed boards, which can easily and reliably effect the connection and disconnection therebetween.
According to the present invention, a card having on its opposite ends connectors, can be easily connected to a pair of spaced stationary mother boards each having connectors corresponding to the connectors of the card.
Further properties of the present invention will become apparent from the detailed description which follows.
BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments of the present invention are illustrated in the accompanying drawings which are incorporated in and constitute a part of this specification and, together with the description, serve to explain the principles of the invention.
FIG. 1 is a perspective view of mother boards and cards connected thereto by means of a connector device according to the present invention,
FIG. 2 is a cross-sectional view of a connector device according to the present invention,
FIG. 3 is a view similar to FIG. 2, but illustrates a different position of the female connector,
FIG. 4 is an exploded perspective view of a connector device comprising sliding means, according to the present invention,
FIGS. 5A to 5C are schematic plan views of a part of sliding means in different positions, and,
FIG. 6 is a perspective view of a variant of the female connector illustrated in FIG. 4.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
First, with reference to FIG. 1, a plurality of printed boards 2 which are called "cards" (only two cards are illustrated) are inserted between a pair of opposed printed boards 1 and 1' which are called "mother boards", along the direction designated by the arrow. The horizontal cards 2 are inserted in a multi-layered fashion between the vertical mother boards 1 and 1'. Each card 2 can be electrically connected at its opposite ends to the corresponding mother boards 1 and 1', by means of connector devices 3 in a so-called "plug-in" fashion.
Details of the connector devices 3 are illustrated in FIGS. 2 and 3. Each card 2 has at its opposed ends (only one end t
REFERENCES:
patent: 3466591 (1969-09-01), Ecclesia
patent: 4125308 (1978-11-01), Schilling
patent: 4230986 (1980-10-01), Deaver et al.
patent: 4232924 (1980-11-01), Kline et al.
Kawano Kyoichiro
Murase Teruo
Oshitani Akiyoshi
Fujitsu Limited
McGlynn Joseph H.
McKenzie, Jr. Frank H.
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