Patent ID: 8840200

Claim:
A movable fixing structure configured for being disposed between a first casing and a second casing, the movable fixing structure being configured for causing the first casing to be combined with or detached from the second casing along a first axial direction, the movable fixing structure comprising: a blocking component movably disposed on the first casing along a second axial direction, the blocking component being configured for moving between a first position and a second position; a locating element having a first locating portion, a second locating portion and an opening located next to the second locating portion, the locating element being disposed on the first casing and configured for moving between a third position and a fourth position along a third axial direction, wherein the first axial direction, the second axial direction and the third axial direction are perpendicular to each other; and a limiting element disposed on the second casing and configured for interfering with the second locating portion on the first axial direction, wherein when the blocking component is at the first position, the locating element is limited at the third position by the blocking component and the locating element is interfered with the second locating portion by the blocking component so that the first casing is constrained to move away from the second casing along the first axial direction, and when the blocking component is at the second position, the locating element is configured for moving to the fourth position, so as to release the interference between the limiting element and the second locating portion; wherein when the blocking component moves from the first position to the second position, the locating element is configured for moving from the third direction to the fourth direction along the third axial direction, so as to make the limiting element correspond to the opening and release the interference between the limiting element and the second locating portion.