本文研究的主要目的是設計一個堅固且具有排臭功能的馬桶坐墊(簡稱:馬桶坐墊)，而設計的考量主要為馬桶坐墊結構承載應力下的應變行為，且也將進行馬桶坐墊可行性的評估，最後將設計的馬桶坐墊、馬桶底座、馬桶水箱及廁所結構建立起相關的連結機構及線路。
理論分析流程將分成四部份進行，第一部份為運用Pro/Engineer 3D繪圖軟體建立可能式樣、尺寸馬桶坐墊的3D分析模式及其立體圖。第二部份為根據Pro/Engineer所建立馬桶坐墊的分析模式轉換到有限元素分析軟體ANSYS上，並進行元素的切割及負載條件及邊界條件的建立。第三部份為進行有限元素ANSYS軟體的分析，並進行數值結果的收斂分析與坐墊厚度的最佳尺寸分析。第四部份為設計馬桶坐墊與馬桶底座、馬桶水箱及廁所室內結構的相關連結的機構及線路，並利用示意圖將設計概念顯現出來。

The main purpose of this thesis is to design a solid and discharging stinky-smell toilet seat (for short: toilet seat). The design consideration is the structure of the toilet seat can withstand the strain behavior under the stress. And the feasibility of the toilet seat is also considered in this analysis process. Finally, the relative connecting mechanism and pipelines of the toilet seat, toilet base, toilet tank and lavatory structure are constructed.
The theoretical analysis process is divided into four parts. The first part is to use Pro/Engineer 3D mapping software to set up the analysis model and its solid chart of possible styles and sizes of the toilet seat. The second part is to base the designed model and transfer the model to the finite element program ‘‘ANSYS’’ and build the model element mesh, loading condition and boundary condition. The third part to proceed the finite element ANSYS analysis and base on the result to proceed the convergence analysis and the best dimension analysis of the seat thickness. The fourth part is to construct the relative connecting mechanism and pipelines of the toilet seat, toilet base, toilet tank and lavatory structure and display the designed idea by using the schematic diagram.

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