A Study on the Reliability Improvement of the Spiral Spring in a Sliding Mechanism for Mobile Phones

스파이럴 스프링을 이용한 휴대폰 슬라이드 기구의 신뢰성 향상에 관한 연구

In this paper, we improved the reliability of a spiral spring in semi-auto sliding mechanism of mobile phones. In an semi-auto opening mechanism of mobile phone, the spring must have sufficient reliability such that the spring force does not reduce under a half of initial value after 100000 operations. Since the inner space of the mechanism is very small, it is difficult to design a spring having sufficient reliability. We designed a spiral spring satisfying such conditions and analyzed its elastic performances using finite element method.