Electronic apparatus

An electronic apparatus comprising:

• a fixed-side housing including a first surface;
• a movable-side housing including a second surface facing the first surface of the fixed-side housing and a guide groove formed in the second surface, the guide groove including a bottom portion;
• a pair of rail members attached to the movable-side housing at opposing long sides of the second surface of the movable-side housing;
• a coupling portion configured to rotatably and slidably couple the fixed-side housing and the movable-side housing together, the coupling portion comprising:
• a coupling main body including a base plate attached to the first surface of the fixed-side housing and a swing plate rotatably attached to the base plate, wherein the swing plate includes a pair of arm portions slidably engaged by the pair of rail members;
• a guide pin protruding from the coupling main body and configured to travel within the guide groove within a range restricted by the guide groove, the guide pin including a tip portion configured to be received in the guide groove;
• a buffering member attached to the tip portion of the guide pin and configured to buffer contact between the tip portion of the guide pin and the guide groove;
• and
• an urging member configured to urge the guide pin toward the bottom portion of the guide groove.

A cellular phone comprising:

• a fixed-side housing including a first surface;
• a movable-side housing including:
• a second surface facing the first surface of the fixed-side housing;
• and
• a guide groove formed in the second surface, the guide groove including a bottom portion;
• a pair of rail members attached to the movable-side housing at opposing long sides of the second surface of the movable-side housing;
• a coupling portion configured to rotatably and slidably couple the fixed-side housing and the movable-side housing together, the coupling portion comprising:
• a coupling main body including a base plate attached to the first surface of the fixed-side housing and a swing plate rotatably attached to the base plate, wherein the swing plate includes a pair of arm portions slidably engaged by the pair of rail members;
• a boss portion attached to the base plate in a hole formed therein;
• a guide pin protruding from the coupling main body and configured to travel within the guide groove within a range restricted by the guide groove, the guide pin including a tip portion configured to be received in the guide groove and the guide pin being positioned in the boss portion with the tip portion protruding through an arcuate slot formed in the swing plate such that the swing plate can rotate with respect to the base plate;
• a roller member attached to the tip portion of the guide pin and configured to buffer contact between the tip portion of the guide pin and the guide groove;
• and
• a spring interposed between the boss portion and the roller member so as to urge the guide pin toward toward the bottom portion of the guide groove and prevent accidental removal of the tip portion from the guide groove.