Docking device

A docking device comprising:

• a device chassis having an apparatus mounting section for receiving a portable information apparatus;
• an engaging member projects from a surface of said device chassis, which has a hook portion that can engage with and disengage from an engaging hole of said portable information apparatus, and which is movable between an engagement position at which said hook portion engages with said engaging hole and a disengagement position at which said engagement of said hook portion with said engaging hole is released;
• and
• a restricting member movable between a retraction position at which said engaging member is allowed to move from said engagement position to said disengagement position and a restriction position at which the movement of said engaging member from said engagement position to said disengagement position is restricted by coming in contact with said engaging member at a rear surface of said hook portion, wherein said rear surface of said hook portion of the engaging member has an inclined surface which gradually inclines toward the hook portion in a direction in which said engaging member projects, wherein said restricting member has a contact surface which inclines such that the contact surface gradually becomes wider in the direction in which the engaging member projects and which comes in contact with the inclined surface of the engaging member at the restriction position.