Patent ID: 7363065
Filing Date: 2008-04-22
Classification: H04M

Abstract:
1. A sliding-type mobile communication terminal having a first terminal body and a second terminal body, the first terminal body and the second terminal body being slid relative to each other while one of the first terminal body and the second terminal body is laid on the top of the other, wherein the terminal comprises: a motor for providing power necessary for a sliding movement; a power transmission unit connected to a rotary shaft of the motor for transmitting a driving force of the motor, the power transmission unit including a pair of engaging members, resilient means for selectively engaging the engaging members with each other and a guide cam for receiving the resilient means and one of the engaging members; a pinion connected to the power transmission unit and rotated by means of the driving force of the motor; the first terminal body having a rack attached thereto, the rack being engaged with the pinion, the first terminal body being slid relative to the second terminal body when the pinion is rotated; the second terminal body having the power transmission unit and the pinion, the motor being securely fixed to the second terminal body; an opening/closing operation switch disposed in the first terminal body or the second terminal body for applying an operation signal to the motor; and a control unit for controlling the operation of the motor in response to the signal of the opening/closing operation switch; wherein the pair of engaging members comprise: a hinge shaft having one side fixed to the rotary shaft of the motor; and a slide cam selectively engageable with the hinge shaft, wherein the guide cam relatively locks the slide cam in the rotating direction and movably accommodates the slide cam in the axial direction, the guide cam having one end engaged with the pinion, and wherein the resilient means is disposed between the slide cam and the guide cam for pressing the slide cam against the hinge shaft.