腳踏車後懸吊系統之類型合成與運動分析

Type Synthesis and Kinematic Analysis of Rear Suspension Mechanisms of Bikes

莊以寬(I-Kuan Chuang)

指導教授 ： 徐孟輝

崑山科技大學/工程學院/機械工程研究所/碩士(2004年)

摘要

自腳踏車問世到現在，腳踏車的後懸吊系統(Rear Suspension System of Bike)幾乎沒有太大的改變。基本腳踏車的懸吊系統主要是充氣內胎的橡膠輪胎，及椅墊含有彈簧且以軟性材料製造的座墊。近年來腳踏車的後懸吊系統設計可見到連桿機構的應用。適當設計連桿機構的相對位置及尺寸，再輔以氣液壓式的彈簧避震器柱(Suspension Strut)、或者可調式的彈簧避震器柱，可使腳踏車駕駛人得以獲得更舒適的騎乘感受。 本研究的目的是創新設計舒適且安全的新型腳踏車後懸吊系統。本研究方法首先是將具有旋轉與減震功能的接頭(Rotational Damper Joint)，置入現有的腳踏車的後懸吊系統中；再訂定腳踏車後懸吊系統的設計限制條件，再利用創意性機構設計的方法合成出12 個新型的六桿腳踏車後懸吊機構，最後利用向量迴路法與Working Model 套裝軟體作後懸吊機構的運動分析與模擬以確定本研究所提理論的可行性。 本研究的所提方法可得到舒適且安全的新型腳踏車後懸吊系統。

關鍵字

運動分析 ； 旋轉與減震接頭 ； 類型合成

並列摘要

Traditionally, the main components of rear suspension system of bike are tire, pad, frame, and spring for long years. Recently, alternative rear suspension system components are linkages, suspension strut, and spring. By proper designing the dimensions of the linkage and suspension strut, the rider will long the comfort of bikes. Hence, the purpose of this study is to creative design a new, comfortable, and safe mechanism of rear suspension system of bike. The concept of this study is a rotational damper pair replaces a revolute pair. First, we analyze the topological structure and motion characteristics of existed rear suspension mechanisms. Then, the design criteria of the topological structure are described. Based on the design criteria of topology, the Yan’s methodology of mechanism design is applied to synthesize new rear suspension mechanisms. And, the kinematic and force analysis of these new mechanisms is done well. Finally, a motion simulation of a (6,7) rear suspension mechanism are done well by using the package of Working Model. This research of the provide method can obtain 12 new rear suspension mechanisms with six links.

並列關鍵字

Rotational Damper Joint ； Type synthesis ； kinematic analysis

參考文獻

[1] Pennestri, E. and Strozzieri, A.,1988, “Optimal Design and Dynamic Simulation of a Motorcycle with Linkage Suspension,” Int. J. of Vechicle Design, Vol. 9, No3, pp. 339-350.

[2] Yan, H. S. , 1998, “Creative Design of Mechanical Devices,” Springer, Singapore.

[3] 黃社振先生，1989年六月，連桿型夾緊裝置之構造合成，國立成功大學機械工程研究所，碩士論文。

[4] 江永築先生，1990年六月，八桿運動鏈之靜對構形，國立成功大學機械工程研究所，碩士論文。

[5] 陳正昇先生，1990年六月，登山自行車後懸吊機構之設計，國立中山大學機械工程研究所，碩士論文。