| Summary: | 碩士 === 國立臺北科技大學 === 製造科技研究所 === 105 === In recent years, the notebook computer touchpad and push button design has been integrated together. Although the touch area becomes larger, but the press force will be more difficult to control. This thesis is to study the press force and displacement of touchpad. Analysis process includes: (1) Pro / ENGINEER was used to establish a 3D model, and to simplify the model before analysis. (2) Import the files of the simplify model into Pro / MECHANICA, the analysis conditions include three pressing forces, 1.67 N, 1.8 N, and 1.9 N; four types of material, TALC 5%, 15%, 20%, 25%; and three types of plate thickness, 0.8 mm, 1.0 mm, 1.2 mm. (3) Set press force as the main conditions, with different materials and thickness for comparison analysis. The press stroke of the switch is 0.16 ± 0.05 mm. If the displacement of the measuring point is less than 0.16 mm, it will not be able to contact the switch and the switch cannot start. Results show the displacement of the measuring point cannot reach the requirement of 0.16 mm when the press force is 1.67 N. When the press force is 1.8 N, TALC 5% and the support plate thickness 0.8 mm, the measurement point displacement is 0.240 mm that satisfy the requirements of the touch switch started. When press force is 1.9 N, five experiment conditions of the displacement are to meet the press stroke. However, at the external load position, whether the displacement is too large must be considered and the displacement space is sufficient
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