Abstract The invention relates to a card reader and to a novel connector for a plurality of printed circuit boards. In the connector a plurality of dielectric laminates are bonded together with electrical contacts arranged in rows. Printed circuit boards are insertable within pockets formed by the laminates. The spring contacts engage edges of the printed circuit boards. Elastomeric strips are compressed internally in the pockets to bias the contacts into electrical engagement with the printed circuit boards without a need for soldering the contacts to the boards. In the card reader, a read head incorporates the described connector and is mounted for displacement toward and away from an apertured encoded card. Displacement of the read head is produced by rotation of a shaft on which are mounted eccentric cams. The read head is provided with follower blocks which engage the surface of the cams. Upon rotation of the cams the cam followers are required to shift and allow the desired displacement of the read head toward and away from the card being read.
In a card reader having a fixed circuit board and a movable read head carrying electrical contacts for engagement on said circuit board and wherein an apertured card is interposed between the contacts and the circuit board such that the card apertures permit communication of selected contacts with the circuit board, the improvement comprising: a plurality of dielectric strips on the read head laminated together and sandwiching therebetween the electrical contacts for engagement against said circuit board, recessed portions of said dielectric strips defining pockets into which barrel potions of the electrical contacts project, printed circuit boards pluggably received in said pockets together with resilient means received in said pockets for biasing the barrel portions of said contacts into electrical engagement on the printed circuit boards and for wedgingly retaining the printed circuit boards in said pockets, and electrical wires pluggably connected in said barrel portions for providing electrical inputs to said contacts, the printed circuit boards in said pockets being spaced from each other for receiving electrical circuit components disposed in the spaces between said printed circuit boards.
Claim 2
Dependent Claim
179 words
In a card reader having a fixed circuit board and a movable read head carrying electrical contacts for engagement on said circuit board and wherein an apertured card is interposed between the contacts and the circuit board such that the card apertures permit communication of selected contacts with the circuit board, the improvement comprising: a plurality of dielectric strips on the read head laminated together and sandwiching therebetween the electrical contacts for engagement against said circuit board, recessed portions of said dielectric strips defining pockets into which barrel potions of the electrical contacts project, printed circuit boards pluggably received in said pockets together with resilient means received in said pockets for biasing the barrel portions of said contacts into electrical engagement on the printed circuit boards and for wedgingly retaining the printed circuit boards in said pockets, and electrical wires pluggably connected in said barrel portions for providing electrical inputs to said contacts, the printed circuit boards in said pockets being spaced from each other for receiving electrical circuit components disposed in the spaces between said printed circuit boards.