Abstract: A positioning structure pivotally disposed on a computer housing is provided. The positioning structure includes an assembly frame having first and second side walls, the first wall including a pivotal portion and a retaining portion. The first side wall further has a plurality of through holes being formed therethrough. The pivotal portion includes a pair of pivotal holes and a retaining portion projects from the first side wall and has a retaining hole formed therethrough. A positioning unit pivotally and releasably engages the pivotal holes of the pivotal portion. The positioning unit further includes a plurality of penetrating members which engage the through holes of the assembly frame and has a rotatable button being formed thereon. Rotation of the rotatable button allows for releasable locking of the positioning unit to the assembly frame.

Abstract: The present invention provides a positioning structure pivotally disposed at a computer housing. The positioning structure comprises an assembly frame and a positioning unit. A pivotal portion, a retaining portion, and a plurality of through holes are disposed at an outside of each of two sidewalls of the assembly frame. One end of the positioning unit forms a pivotal end pivotally joined with the pivotal portion. The other end of the positioning unit forms a positioning end. A plurality of penetrating parts are disposed at an inside of the positioning end. The penetrating parts respectively correspond to the through holes, and can fix hardware parts. The positioning unit has a turn button thereon, which can make proper rotation on the positioning unit. The turn button can be retained with the retaining portion. Assembly and disassembly of hardware parts can thus be easily and quickly accomplished.