| 摘要 |
<p>An opening/closing device for use in a cellular phone is provided to improve structural stability and prevent the cam member from being worn away by forming a rib caught on an upper part of a housing and a rib caught on a lower part of the housing on movable cams connected to the housing, so that the lifetime of the opening/closing device can be lengthened. An opening/closing device comprises a housing(10) capable of being opened in an upward direction, wherein the housing(10) has a through hole(14) formed in a side direction, the first cam(20) having the first wave-shaped surface(22) and an external connection axis(24) protruded to the through hole(14), the second cam(30) having the second wave-shaped surface(32) mapped to the first wave-shaped surface(22), and a spring member(40) for coupling the first cam(20) to the second cam(30). The first cam(20) and the second cam(22) are embedded in the housing(10).</p> |
