Operation member and electronic devices having the same

An electronic device, comprising:

• a casing having portions defining an opening;
• an operation member, comprising:
• a body including an operating end and a coupling end, the body being configured to partially protrude through the opening of the casing for operating;
• and
• a skirt member arranged on the coupling end, the skirt member including a base plate outwardly extending from peripheral portions of the coupling end, a wall upwardly extending from peripheral portions of the base plate, and a groove defined between the wall and the body;
• and
• a circuit module having a circuit board, the circuit board including a controller disposed thereon;
• wherein the operation member is sleeved onto the controller and the body of the operation member passes through the opening, the body and the opening cooperatively define a gap therebetween, the groove is correspondingly arranged beneath the gap;
• wherein the operation member with the body and the skirt is completely separated from the casing.

An operation member, comprising:

• a body including an operating end for operating and a coupling end;
• and
• a skirt member arranged on the coupling end, the skirt member including a base plate outwardly extending from peripheral portions of the coupling end, a wall upwardly extending from peripheral portions of the base plate, and a groove defined between the wall and the body;
• wherein the skirt member and the body of the operation member are unitarily formed as a one piece structure.