초록 ▼

A mobile telephone having a main body and a sub-body closably mounted on the main body. The mobile telephone includes an opening/closing device installed in the main body, for automatically opening and closing the sub-body against the main body; a switch located at a specific place on the main body,

A mobile telephone having a main body and a sub-body closably mounted on the main body. The mobile telephone includes an opening/closing device installed in the main body, for automatically opening and closing the sub-body against the main body; a switch located at a specific place on the main body, for driving the opening/closing device; a detector for detecting an opening angle of the opening/closing device; and a controller for controlling rotation of the opening/closing device to a predetermined opening angle by analyzing an output of the detector.

대표청구항 ▼

1. A mobile telephone including a main body and a sub-body closably mounted on the main body, comprising:an opening/closing device installed in the main body and operative to rotate so as to displace the sub-body and the main body relative to one another at an opening angle defined between open and

1. A mobile telephone including a main body and a sub-body closably mounted on the main body, comprising:an opening/closing device installed in the main body and operative to rotate so as to displace the sub-body and the main body relative to one another at an opening angle defined between open and closed positions of the sub-body; a switch for driving the opening/closing device; a photo-sensor operative to detect the opening angle of the opening/closing device and to generate an output signal upon detection thereof; and a controller operative to control rotation of the opening/closing device in response to the output signal from the photo-sensor to deactivate the opening/closing device. 2. The mobile telephone as claimed in claim 1, wherein the opening/closing device comprises:a hollow module housing with a through hole formed at one end thereof, a decelerating module fixedly inserted in the module housing and including a gear train; and a sub-body coupler operatively attached to the gear train fixed to an end of a driving module of the decelerating module, a part of the sub-body coupler projecting from the through hole of the module housing and being fixed to a side of the sub-body. 3. The mobile telephone as claimed in claim 2, wherein the decelerating module comprises:a driving motor; and a decelerating device coupled to the driving motor, for reducing the number of rotations and increasing a driving force of the driving motor. 4. The mobile telephone as claimed in claim 1, wherein the switch for driving the opening/closing device is activated by pressing specific keys on a keypad of the mobile telephone.5. The mobile telephone as claimed in claim 1, wherein the photo-sensor is turned on and off according to opening and closing of the sub-body.6. The mobile telephone as claimed in claim 1, wherein the sub-body is a flip cover.7. The mobile telephone as claimed in claim 1, wherein the sub-body is a folder.8. The mobile telephone as claimed in claim 3, wherein the decelerating device comprises:a reduction gear assembly rotatably coupled to the driving motor, and a driving shaft rotatably fixed to the reduction gear assembly to rotate at a rotational speed, which is lower than a rotational speed of the driving motor. 9. A mobile telephone including a main body and a sub-body closably mounted on the main body, comprising:an opening/closing device installed in the main body and operative to rotate so as to displace the sub-body and the main body relative to one another between fully open and fully closed positions of the sub-body; a switch for driving the opening/closing device; a detector operative to detect an intermediary open position of the sub-body and to generate an output signal upon detection thereof; and a controller coupled to the detector and operative to control rotation of the opening/closing device in response to receiving the output signal from the detector to a predetermined opening angle by deactivating the opening/closing device in the fully open position of the sub-body. 10. The mobile telephone of claim 9, wherein the main body and sub-body have inner ends located adjacent to one another in the fully open and closed positions of the sub-body, the detector being located on one of the inner ends of the main body and sub-body and being operative to generate the output signal in response to detecting the intermediary open position of the sub-body.