Patent ID: 6937876
Filing Date: 2005-08-30
Classification: H04M

Abstract:
1. An apparatus for opening a cover of a mobile phone 100 comprising a phone body 1 containing a circuit board and having operation buttons, and a cover 2 hingedly assembled with said phone body 1 by means of a shaft connection section 3 and a pivoting section 4 of said cover 2 , so that said cover 2 can be pivotally opened and closed, comprising a housing 13 containing operation assembly 150 is disposed within said pivoting section 4 of said cover 2 of said mobile phone 100 , and button 5 is disposed in said shaft connection section 3 of said phone body 1 so as to control said operation assembly 150 , wherein said operation assembly 150 comprises a torsion-compression spring 15 inserted in a receiving chamber 151 of said housing 13 and having spring arms 16 , 17 formed at both ends so as to generate an axial force and a torsion force in a rotational direction, an actuator 8 having a connection shaft 7 in front of said torsion-compression spring 15 , and a clutch 10 joined with said actuator 8 in front of said actuator 8 , said clutch 10 fixed to the front side of said housing 13 by means of fixing means 153 so as to be able to retain a torsional force in the rotational direction and a compressed force in the axial direction and including an opening/closing inclination surface 12 , a joining recess 11 which a joining protuberance 9 comes in and out from, and torsion surfaces 29 ; 53 , said actuator 8 having a joining protuberance 9 which is engaged with said opening/closing inclination surface 12 of said clutch 10 when said cover 2 is closed, and said opening/closing inclination surface 12 being engaged with said joining protuberance 9 when the cover 2 remains closed and having an angle of inclination so as to have a force of restitution by the compression of said torsion-compression spring 15 greater than a force of restitution by the torsion of said torsion-compression spring 15 , so that said cover 2 is maintained closed; protuberances 27 , 28 are formed in a protruded state in said actuator 8 and on the inner wall 14 of said housing 13 so as to maintain said torsion-compression spring 15 in a stable state and maximize torsional efficiency when said cover 2 is rotated, and have engagement means 152 to secure said spring arms 16 , 17 formed on both ends of said torsion-compression spring 15 ; and said button 5 is inserted into a button hole 6 formed in said shaft connection section 3 in such a manner that said button 5 cannot rotate in said button hole 6 and is joined with said connection shaft 7 extending through the center of said clutch 10 .