| 摘要 |
Disclosed is an opening/closing device of a mobile terminal, which comprises: a housing 20 having a polygonal section and being non-rotatably inserted into a hinge 7 of a cover 6 constituting the mobile terminal 1; elastic means 30 inserted into the housing 20; a rotary cam shaft 40 provided at one end with an insertion shaft 41 which is inserted into the elastic means 30 in a close contacting manner and non-rotatably contained within the housing 20, and at the other end with opposed cam faces 42, each of the cam faces 42 being unintermittently constituted of an escarpment a, a top b and an inclination c; a shaft 50 penetrating the rotary cam shaft 40, the elastic means 30 and the housing 20 in sequence, the shaft 50 being provided at one end with a stepped recess 54 into which a snap ring 23 is fastened to prevent the shaft from being released from the housing 20, and at the other end with a hinge piece 51 fixedly inserted into a hinge 3 of a body of the mobile terminal 1; and a follower protrusion 53 projected at the outer periphery of the shaft 50 as integral and spaced with/from the hinge piece 51, and being moved with the end contacting to the cam faces 42 of the rotary cam shaft 40. The number of the parts constituting the device 10 is reduced to downsize the same, the productivity is enhanced, and injection of the lubricant ensures smooth and stable operation of the device 10 even if the device is continuously used.
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