本研究之目的是探討電腦連接器新型卡扣結構件於使用過程中,在一定按壓行程下產生最小應力的卡扣結構件尺寸的最佳化設計。研究方法包括根據設計功能、協會規範及經驗通則繪製3D產品模型,再依據曲樑理論找出卡扣結構件的應力相關關鍵控制因子,並利用有限元素分析及田口方法求得最佳的設計參數組合,使結構件之應力不會產生永久變形讓產品失效。考慮之設計控制因子包括按壓位移量、U形折彎部高度、力臂長度、與板金厚度。本研究個案已成功找出符合設計要求之卡扣件尺寸,且經實驗驗證其可行性。同時從此個案之分析結果顯示影響最大的因子為按壓位移量、其次依序為U形折彎部高度、力臂長度、與板金厚度。
The main aim of this study is to investigate the optimum design solution of latest developed latch structure for computer connector under predefined strokes during connecting operation. The research steps include: creating 3D design model based on design function, conduct of association specification and working experience;studying the key parameters that affect the stress distribution according to curved beams theory;using the commercial finite element analysis technique and the Taguchi method to search the optimum size of the latch structure under given loading. The design parameters considered include the pushing displacement on the component, the height of the curved portions of U shape of structure designed, the length of moment arm, and the thickness of the sheet metal. An optimum solution under the design criteria is generated in this case study, and a simple test is conducted to verify the solution. The final results also show that the most influential factor on the design of latch structure is the pushing displacement on the component, the second one is the height of the curved portions of U shape of structure designed, the third one is the length of moment arm, and the least influential factor is the thickness of the sheet metal.