Driving mechanism

A driving mechanism comprising:

• a first casing;
• a second casing arranged on the first casing;
• and
• at least one operating member movably mounted on one of the first casing and the second casing;
• wherein when the at least one operating member is moved from a first state to a second state, the at least one operating member drives another one of the first casing and the second casing to move from a first predetermined position to a second predetermined position along a first vertical direction;
• wherein when the at least one operating member is moved from the second state to the first state, the another one of the first casing and the second casing moves from the second predetermined position to the first predetermined position along a second vertical direction opposite to the first vertical direction;
• wherein the at least one operating member is rotatable between the first state and the second state, when the at least one operating member is in the first state, the at least one operating member is translatable between a first position and a second position, when the at least one operating member is in the first state and at the first position, the at least one operating member is prevented from rotating away from the first state, and when the at least one operating member is in the first state and at the second position, the at least one operating member is allowed to rotate away from the first state.