由於電源供應器會因彈片結構問題，衍生彈片變形而與系統接觸不良，可能會導致短路當機。本文應用修正式TRIZ方法，對電源供應器的彈片與彈片的組裝結構進行創新結構設計改善。最後進行改善彈片結構的彈片彎曲角度，先設計彎曲彈片的模具，再用Abaqus軟體模擬不同彈片彎曲角度的應力，再用逐步逼進法找出彈片受力彎曲後有最小應力的彈片彎曲角度。
本文先應用修正式TRIZ之軟體系統篩選出建議的創研法則及其細項說明，藉以思考結構改善的概念設計方式，並經CAD軟體模擬其組裝及成行可行性，避免可能的干涉現象發生; 再經初步必要的計算及Abaqus有限元素分析軟體的輔助，驗證材料的相關性質如應力應變均在安全範圍內，結構不致破壞。
有關機殼下蓋結構的技術部分之改良，第一階段為了組裝設計方便，我們利用修正式TRIZ分群法，進行欲改善參數為「33.使用的方便性」之判讀，判讀後得到之發明法則為「3.局部特性」的「c.將物體各零件置於最適合操作的條件下」，和不欲惡化參數為「15.移動物體之耐久性」，將此發明法則導入電源供應器結構以進行實際改善。因此本文建立3D繪圖模型，在前方面板設計成整體，使前方面板的強度增加，使用夾具固定機殼下蓋，彈片從前方組裝到機殼下蓋，使組裝方便。第二階段針對其彈片定位不足之部分，我們利用修正式TRIZ發明方法進行改良，得到改善參數為「13.物體之穩定性」，再以修正式TRIZ發明方法，判讀後得到之發明法則為「3.局部特性」的「b.具有不同零件的物體以執行不同的功能」，和不欲惡化參數為「16.不動物體之耐久性」。本文依此發明法則建立3D繪圖模型，增加定位塊固定機殼下蓋後端，然後再將彈片放入機殼下蓋內，使彈片結構組裝順利。第三階段在改良的過程中，利用修正式TRIZ發明方法進行改良，得到改善參數為「11.張力/壓力」，判讀後得到之發明法則為「11.事先緩衝」，和不欲惡化參數為「33.使用的方便性」，本文依此發明法則對機殼下蓋與彈片回彈機構的強度性做改善，並進行結構分析。在本階段中，本文先建構出一個模具成形彈片，在模具中模擬並得到彈片成形的彎曲角度，利用Abaqus模擬驗證模型之準確性，利用逐步逼進法找出受外力彎曲彈片後有最小應力的最佳彎曲角度。

關鍵詞:電源供應器、機殼、彈片、TRIZ理論、有限元素分析

Server power supply, due to structural problem of latch, would encounter deformation of latch and poor contact of system which may lead to short circuit and system crash. The paper applies modified TRIZ method to improve the latch of server power supply and the assembly structure of latch and improve the innovative structural design. Finally, the paper carries out improvement of the bending angle of latch, which belongs to latch structure. First of all, the paper designs a die for bending latch. Then Abaqus software is used to simulate the stresses of different bending angles of latch; and stepwise approximation method is also used to find the bending angle of latch having the least stress after latch is bended by force.
The paper applies the software system of modified TRIZ to select the suggested invention rules and their detailed explanations. Through thinking of the conceptual design way of structural improvement and use of CAD software for simulation of its assembly and feasibility, interference can be avoided. After preliminary and necessary calculation, and with the help of the finite element analysis software, Abaqus, the paper proves that the related such as stress and strain of material, are within the safe range, and their structures would not be destroyed.
Regarding improvement of the technical part of lower cover structure of chassis, the first stage is to achieve design of convenient assembly. We use modified TRIZ clustering method to carry out interpretation of the active improvement parameter, “33. ease of operation”. After interpretation, the acquired invention rule is “c. place each part of the object under conditions most favorable for its operation” under “3. local quality”; and the non-worsening parameter is “15. duration of action of moving object”. This invention rule is brought to the structure of server power supply to carry out actual improvement. Therefore, the paper establishes a 3D drawing model to make the front panel designed as a whole and increase the strength of the front panel. Using fixture to fix the lower cover of chassis, assembly of latch, from assembly of the front part to lower cover of chasses, is made to becomes convenient. The second stage focuses on the part of insufficient positioning of latch. We use modified TRIZ invention method to make improvement, and the achieved improvement parameter is “13. stability of the object's composition”. Then modified TRIZ invention method is used again for interpretation. The invention rule obtained after interpretation is “b. have different parts of the object carry out different function” under “3. local quality”; and the non-worsening parameter is “16. duration of action by stationary object”. Based on this invention rule, the paper establishes a 3D drawing model to increase a positioning block to fix the back end of lower cover of chassis. After that, the latch is put in the lower cover of chassis to make assembly of latch structure smooth. The third stage is that in the improvement process, modified TRIZ invention method is used to carry out improvement, and the obtained improvement parameter is “11. stress or pressure”. After interpretation, the acquired invention rule is “11. cushion in advance”; and the non-worsening parameter is “33. ease of operation”. Based on this invention rule, the paper makes improvement of the lower cover of chassis and the strength of springback mechanism of latch, and conducts analysis of structure. In this stage, the paper firstly establishes a forming latch of a die. In the die, simulation is carried out, achieving the bending angle of latch forming. Abaqus simulation is employed to prove the accuracy of the model. Stepwise approximation is used to find the best bending angle having the least stress after the latch is bended by external force.
Keywords: server power supply, chassis, latch, TRIZ theory, finite element
analysis

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