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논문 기본 정보

자료유형
학술대회자료
저자정보
정규홍 (대진대학교)
저널정보
유공압건설기계학회 유공압건설기계학회 학술대회논문집 유공압건설기계학회 2021年度 春季 學術大會 論文集
발행연도
2021.7
수록면
77 - 83 (7page)

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이 논문의 연구 히스토리 (2)

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The bunker bed is a furniture that efficiently utilizes a narrow indoor space by having a high bed and using the empty space below as a living and storage space. The demand for multi-purpose furniture is increasing due to the recent increase in single-person households and wide-spread shared accomodation. According to the consumer research, one of the major drawback of the bunker bed was to get on and off the bed through a ladder or stairs. In order to improve the problems, it was confirmed that the height adjustment function that can easily adjust the minimum and maximum heights of bed was necessary. There exists a domestic product released as a bunker bed with adjustable height. However, it has a disadvantage in that the vertical adjustment height is small, it does not move stably when the bed height is adjusted, and the force required to adjust the height is rather large. In this study, to improve the shortcomings of the conventional bunker bed, a height adjustable bunker bed was designed by using a gas spring that generates a repulsive force with compressed gas inside. The design process consists of three steps. Firstly, the hysteresis characteristics due to a friction and spring constant of a commercial gas springs were confirmed by measuring the repulsive force vs. compressed displacement. Secondly, the requirements of the vertical lifting force exerting on bed against gravity force were derived. Finally, the height-adjustable bed designed using the four-bar link mechanism was designed with 4 parameters so that the bed weight of 60-70kgf can be adjusted to 800mm in height by affordable inital operation force. The performance was verified through prototype production and the results of vertical displacement and force to move were nearly the same as designed.

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Abstract
1. 서론
2. 가스 스프링 구조 및 특성
3. 이동침대에 작용하는 반발력 분석
4. 침대높이조절 기구 설계
5. 결론
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