Patent ID: 7633750

Claim:
A locking device for releasably locking an electronic device, the locking device comprising: a case for attaching the electronic device thereto, the case defining at least one slot therein; a hook module comprising at least one hook configured for passing through the at least one slot; a linkage module comprising at least one first lever configured for shifting the at least one hook to move between a locking position and a releasing position; and a positioning module configured for releasably engaging with the first lever, wherein when the at least one hook is shifted by the first lever to the releasing position, the electronic device is unlocked from the case, the first lever is blocked by the positioning module for temporarily holding the hook at the releasing position before the electronic device is detached from the case, and when the electronic device is detached from the case, the first lever is released by the positioning module, and the at least one hook is shifted by the first lever to the locking position; wherein the positioning module comprises a first positioning portion configured for being slidable relative to the first lever, and a second positioning portion configured for detecting whether the electronic device is attached to or detached from the locking device, and selectively blocking the first positioning portion; wherein the first positioning portion comprises a first plate configured for slidably mounting to the first lever, a second plate attached to the first plate, and a first rack attached to the second plate, and a first angle is defined between an elongated direction of the first rack and the first plate.