Electronic apparatus, card-type electronic component used with the electronic apparatus, and electronic system with expanding apparatus for expanding function of electronic apparatus

An expanding apparatus for expanding functions of an electronic apparatus, comprising:

• a main body having a bearing section for bearing the electronic apparatus and expanding means for expanding the functions of the electronic apparatus;
• a plug-in type connector provided on the main body and electrically connected to the expanding means, for removably receiving a matching plug-in type connector of the electronic apparatus loaded on the bearing section;
• and
• a support assembly for supporting the connector of the expanding apparatus to allow the connector of the expanding apparatus to move in a direction for engaging and disengaging from the connector of the electronic apparatus
• wherein said support assembly comprises a connector holder holding the connector of the expanding apparatus, a support member for supporting the connector holder to be movable in the direction of engagement and disengagement between a stand-by position and a pushed-in position, and urging means fixed to the main body, for urging the connector holder toward the stand-by position and
• wherein said support member is provided with a plurality of guide holes, and said support assembly comprises a plurality of guide sleeves extending from the main body in the direction of engagement and disengagement and extending through the respective guide holes, each of said guide sleeves having a base portion rigidly fixed to the main body, an end portion extending from the main body, and a stopper provided on the end portion, for abutting the connector holder in its stand-by position to limit the movement of the connector holder, each of said guide sleeves being tapered from the end portion to the base section, the end portion having a diameter substantially equal to the diameter of the guide holes, and the base portion having a diameter smaller than the diameter of the guide holes.