Card edge connection unit

Abstract

Even when a connection board has a large thickness tolerance, a stable connection is achieved by absorbing the tolerance so as to stabilize a contact pressure between the connection board and contacts. In a unit in which electrode groups (13) of a connection board (12) are in pressure contact with elastic contacts (26) formed integrally with an inner housing (15) to connect thereto, the inner housing (15) is provided inside an outer case (14a) of a card edge connector (10) through an elastic member (17) to be freely movable forward and backward in a thickness direction of the connection board(12). The positions of the elastic contacts (26) are adjusted by forward or backward moving the inner housing (15) in accordance with the thickness of the connection board (12) inserted into board insertion slots (23), so a pressure contact force with the elastic contacts (26) is substantially equalized, irrespective of the size of the thickness of the connection board (12).

Description

technical field [0001] The invention relates to a card edge connection device, which inserts the connection substrate of the card edge assembly into the card edge connector for connection, and the card edge connection device can absorb the tolerance of the thickness of the connection substrate to realize stable connection. Background technique [0002] Figure 6 It is a conventional device for electrically connecting a memory card 2 to a connector 6 of an electronic device 1 (Patent Document 1). [0003] In this figure, when the memory card 2 is inserted into the insertion opening 1 a of the device main body 1 , the memory card 2 is guided by the slope 3 a of the protrusion 3 and attached to a position where it abuts against the stopper. In this installed position, the memory card 2 is positioned at a predetermined height by the protrusion 3 . Moreover, by the biasing force F2 of the plate spring 5, the connector 6 made of conductive rubber is more or less compressed throug...

AI Technical Summary

Problems solved by technology

However, when the tolerance of the thickness of the memory card 2 increases, the biasing force F2 of the leaf spring 5 and the pressing force F1 of the connector 6 will act too strongly, and the contact between the conductive contact surface 6a of the connector 6 and the memory card 2 will be too strong. When the contact group 2a slides, there may be damage such as peeling between the conductive contact surface 6a and the contact group 2a

[0005] Conversely, when the tolerance of the thickness of the memory card 2 is too small, poor contact may occur due to insufficient contact pressure between the conductive contact surface 6a of the connector 6 and the contact group 2a of the memory card 2.

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