Card holder

Claim 1

A holder for receiving a card with electronically stored data or a printed circuit board comprising: guide means forming part of said holder and an connector being provided with a plurality of contact springs for contacting connection strips disposed on said card or board, one end of each said contact spring being clamped while the other end is freely movable and makes contact with one of the connection strips when the card or board is inserted; each said contact spring having a first spring end part which is adjacent to the movable end of the contact spring, an intermediate spring part bent into a U-shape and a second clamped spring end part serving as connection terminal, in which the one and the other legs of the U join the first and second spring end parts respectively, said first spring part being disposed substantially perpendicular to the intermediate spring part, and said intermediate part being substantialy perpendicular to the infeed plane of the holder; a stop element located at the point where the first spring end part and the intermediate spring part join, said stop element extending from the plane of the first spring end part into the infeed plane of the holder; whereby in the rest condition, the legs of the intermediate spring part converge slightly to each other in the direction of their ends; said first spring end part extending slanting past the infeed path of the connection strips of the card or board; and a biasing rod having a substantially rectangular cross-section to be inserted and/or operated from outside, said rod lying parallel to and between the stop elements and the bottom of the holder in the rest condition of the contact springs and when rotated by a fourth of one revolution, the U-legs and the first spring end parts are bent from the infeed path of the connecting strips, so that in the subsequent inserting of the card or board without contact pressure, said card or board abuts with its front edge against the stop elements of the contact springs, whereafter the biasing rod is newly rotated by a fourth of one revolution and then the contacting strips contact the contact points of the first end part of the springs.