自行車內變速器是以行星齒輪系作為變速機構的主體，因其具有體積小、換檔作動穩定與不易脫鏈等優點，使得內變速器被廣泛的應用於折疊車與電動自行車中。近年來自行車內變速器漸漸往多速方向發展，其中分流式內變速器雖可達到多速，但相關設計理論尚未完善，故本文主要目的在於建立分流式內變速器的相關設計理論，本研究首先分析現有之分流式內變速器，並歸納出分流式內變速器之基本特性與需求，作為內變速器設計之依據，並透過三組基本行星齒輪系互相耦合，有系統的建立分流式內變速器的可用行星齒輪系構型目錄；其次針對每一可用行星齒輪系提出一程序進行檔位合成，確定其檔位作動表；接著給定各檔位間的轉速差求得各檔位之轉速比值，並配合檔位作動表求出各齒輪齒數；然後進行分流式內變速器調速系統之配置與設計，並與變速機構結合得到具體化結果；最後針對各種可行之設計構想進行分級與評價，本研究具體研究成果為得到二十七型分流式內變速器，且其中三型可達十六速。

The planetary gear train are applied in multi-speed drive hubs for bicycles. Since a multi-speed drive hub has the advantages of the small volume and stable gear shifting, it is used widely in folding bicycles and electric bicycles. The distributed-flow-type multi-speed hubs could provide more gears, the related design theory is not well development. Thus, the purpose of this research is to develop a systematical methodology for the design of the distributed-flow-type multi-speed hub for bicycles. First, an existing patent is analyzed to identify the basic characteristics and the requirements of the multi-speed hubs. Based on the basic characteristics and the requirements, a systematical procedure is proposed to synthesize the feasible concepts of the planetary gear trains. Second, another procedure is proposed to determine the feasible clutching sequence tables. Third, the difference in value of the angular velocity is assigned to calculate the gear ratio and to determine the numbers of the teeth of all gears. Finally, the shifting-gear system in the multi-speed drive hubs is designed and arranged. The evaluation of the multi-speed drive hubs is proceeded to select the better alternatives. The result of this work obtains twenty-senven types of the distributed-flow multi-speed hubs for bicycles, three of them could reach sixteen speeds.

誌謝……………………………………………………………………….I
目錄……………………………………………………………………...II
圖目錄…………………………………………………………….…….IV
表目錄………………………………………………………………......IX
摘要……………………………………………………………………..XI
英文摘要……………………………………………………………….XII
第一章 前言……………………………………………………………..1
1.1文獻回顧………………………………………………………...1
1.2研究目的………………………………………………………...3
1.3本文架構………………………………………………………...4
第二章 自行車內變速器………………………………………………..5
2.1內變速器系統…………………………………………………...5
2.2 Sachs十二速內變速器…………………………………………6
2.3 自行車內變速器之特性與基本需求………………………...30
2.4 系統化設計程序……………………………………………...33
第三章 分流式內變速器之構想設計…………………………………37
3.1 構想設計…………………………………………………...…37
第四章 分流式內變速器之檔位合成…………………........................45
4.1 檔位合成程序…………………………………………...........45
4.2 設計實例…………………………………………...................50
第五章 分流式內變速器之齒數設計……………………………........89
5.1 齒數設計………………………………………………….......89
第六章 內變速器之系統設計……………………………………......113
6.1 調速元件之設計…………………………………………….113
6.2 調速元件之配置…………………………………………….118
第七章 內變速器之分級與評價……………………………………..139
7.1 內變速器之分級…………………………………………….139
7.2 內變速器之評價…………………………………………….142
第八章 結論與建議…………………………………………………..155
參考文獻……………………………..……………………………......157

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