由於現代人長時間使用電腦注視螢幕，導致產生視力減退及肩頸痠痛等現代文明病的人口比例逐漸增加，而研究顯示電腦螢幕與使用者眼部的距離與高度配置有助於改善此項問題。彙整近代國內外四大事務用螢幕品牌的產品，其中可調整高度的螢幕架佔58.33%，已蔚為主流產品，但現有的螢幕調整功能亦僅限於直線運動。本研究提出一種螢幕升降支架，以扭力彈簧作為儲能裝置，使其運動範圍內均為靜力平衡狀態，具有任意位置自然靜止、大幅降低調整螢幕高度的施力與操作繁瑣度，並且具有一近似遠端運動中心，使螢幕畫面在升降過程中都能與使用者保持適當的距離、並維持螢幕表面與視線近似垂直的角度關係。
本研究在機構構型上參考醫療手術機器人之遠端運動，將之延伸應用至螢幕升降支架機構，利用幾何約束程式(Geometric Constrain Programing)設計桿件尺寸，使升降機構大幅降低桿件長度以便減少機構體積並且保有其近似遠端運動中心的特性。藉由向量迴路法分析機構桿件角度、重量、質心位置，並採用市面上方便購得之扭力彈簧，根據靜力平衡理論中的能量法，計算出趨近於平衡之重力位能及彈力位能。接著使用電腦輔助設計進行3D建模設計，匯入Adams軟體模擬分析。最後製作實體模型進行實測，驗證本研究之設計可行性，此一新型螢幕架於運動範圍內皆能於任意位置靜止，且加入彈簧後可使螢幕抬升所需施加的外力達到省力79.8 %的效果。
關鍵字：靜力平衡機構、遠端運動中心、螢幕升降支架、扭力彈簧

Due to the long-term use of computers by modern people to stare at the screen, the proportion of the population with modern civilization diseases such as vision loss and shoulder and neck pain is gradually increasing. Research shows that the distance and height configuration between the computer screen and the user's eyes can help improve this problem. . Combining the products of the four major domestic and foreign business screen brands in modern times, the height-adjustable screen stand accounts for 58.33%, which has become a mainstream product, but the existing screen adjustment function is limited to linear motion. In this study, a screen lift bracket is proposed, which uses a torsion spring as an energy storage device, so that it is in a static equilibrium state within the range of motion, and has a natural static position at any position, which greatly reduces the force application and operation complexity of adjusting the screen height, and has a Approximate the remote center of motion, so that the screen can maintain a proper distance from the user during the process of raising and lowering, and maintain the angular relationship between the screen surface and the line of sight.
This study refers to the distal motion of the medical surgical robot in the mechanism configuration, and extends it to the screen lifting bracket mechanism. Geometric Constrain Programing is used to design the size of the rod, so that the lifting mechanism can greatly reduce the length of the rod in order to reduce the The mechanism is bulky and retains its properties to approximate the distal center of motion. The angle, weight, and centroid position of the mechanism rods are analyzed by the vector loop method, and the torsion springs that are readily available in the market are used. According to the energy method in the static equilibrium theory, the gravitational potential energy and elastic force that are close to equilibrium are calculated. potential energy. Then use computer-aided design to carry out 3D modeling design and import into ADAMS software for simulation analysis. Finally, a physical model was made for actual measurement to verify the feasibility of the design of this study. The new screen stand can be stationary at any position within the range of motion, and the addition of springs can save 79.8% of the external force required to lift the screen. .
Keywords: static balance mechanism, remote motion center, screen lift bracket, torsion spring

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