Electronic device

1. An electronic device comprising a casing with an opening, and a cover member for covering said opening,

said cover member including:

a cover part for covering said opening;

a shank projecting from a rear surface of said cover part, while passing through a hole defined in said casing; and

a protrusion sticking out of said shank, at a position opposite to said cover part with respect to said hole, in a direction crossing an axis of said shank,

said cover member being capable of moving back and forth along said axis of said shank, between a depressed position where said cover part covers said opening and a pulled-out position where said cover part is apart from said opening,

said casing having a first receiving part for receiving said protrusion to prevent the pivotal movement of said cover member about said shank when said cover member moves back and forth between said depressed position and said pulled-out position, and receiving said protrusion to prevent the pressing-in of said cover member after having moved pivotally about said shank while enabling the pivotal movement of said cover member about said shank when said cover member is in said pulled-out position.

2. The electronic device according to claim 1 , wherein said casing further has a second receiving part for receiving said protrusion to prevent said cover member from being disconnected from said casing, irrespective of an angle of pivotal movement of said cover member in said pulled-out position.

3. The electronic device according to claim 2 , wherein said protrusion overlaps said second receiving part when viewed in a direction opposite to a pulling-out direction of said cover member, irrespective of an angle of pivotal movement of said cover member.

4. The electronic device according to claim 1 , wherein

space for allowing the pivotal movement of said protrusion about said shank is defined in said casing between said first and second receiving parts, and

said protrusion is located in said space when said cover member is in said pulled-out position.

5. The electronic device according to claim 4 , wherein the pivotal movement of said cover member in said pulled-out position about said shank causes said protrusion to overlap said first receiving part when viewed in a direction opposite to a pulling-out direction of said cover member.

6. The electronic device according to claim 1 , wherein

said protrusion has a side surface extending along said axis of said shank,

said first receiving part has a side surface extending in a pulling-out direction of said cover member, and

when said cover member moves back and forth between said depressed position and said pulled-out position, said side surface of said protrusion faces said side surface of said first receiving part with a short distance from said side surface of said first receiving part, or has face-to-face contact with said side surface of said first receiving part.

7. The electronic device according to claim 6 , wherein

two sets each of which being constituted by said side surface of said protrusion and said side surface of said first receiving part facing each other with a short distance therebetween, or in face-to-face contact with each other, are provided, and

respective side surfaces of said protrusion belonging to said two sets face each other, with distances from a center of said shank to said side surfaces of said protrusion being different from each other.

8. The electronic device according to claim 1 , wherein

said first receiving part defines space for storing therein said protrusion when said cover member moves back and forth between said depressed position and said pulled-out position, and

a maximum width of an outer edge of said protrusion when viewed in a direction opposite to a pulling-out direction of said cover member is greater than a minimum width of said space when viewed in a direction opposite to said pulling-out direction.