Patent ID: 8381356

Claim:
A hinge mechanism with adjustable torque, comprising: a shaft comprising at least one shaft portion; at least one shaft sleeve, wherein each shaft sleeve defines a through hole for one shaft portion extending through, each shaft sleeve defines a slot extending substantially parallel to the through hole, and each shaft sleeve comprises a plurality of hooks extending from two opposite sides of the slot; at least one first torque spring, each first torque spring comprising a first end fixed to the shaft and a second end extending through the slot, wherein the at least one first torque spring provides torque to prevent the at least one shaft sleeve from rotating relative to the shaft; and at least one first sliding member each disposed around one of the at least one shaft sleeve, wherein the second end of each of the at least one first torque spring is fixed to one of the at least one first sliding member, and each of the at least one first sliding member is moved along the one of the at least one shaft sleeve to compress a corresponding one of the at least one first torque spring, thus the torque that prevents the at least one shaft sleeve from rotating is adjusted.