Patent ID: 8020255

Claim:
A hinge, comprising: a rack; a shaft capable of rotating with respect to the rack; and an interfering assembly mounted on the shaft, the interfering assembly comprising a first interfering member fixed to the rack, and a second interfering member defining a through hole for snugly fitting about the shaft, wherein at least one wedge is formed in a sidewall bounding the through hole of the second interfering member, for firmly mounting the second interfering member on the shaft; wherein the first interfering member comprises a first end surface facing the second interfering member, a first tab is formed on the first end surface, each of two opposite ends of the first tab forms a first slope surface connecting a top of the tab and the first end surface, wherein the second interfering member comprises a second end surface facing the first interfering member, a first recess is defined in the second end surface for receiving the first tab therein, each of two opposite ends of the recess forms a second slope surface connecting a bottom of the recess and the second end surface; wherein when the shaft rotates with respect to the rack, one of the first slope surfaces of the first tab is able to engage with a corresponding one of the two the second slope surfaces of the first recess to guide the first tab sliding into the first recess.