1296596 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種電動腳踏車之驅動機構改良之研 發，尤指一種具有電動及腳踏二種驅動模式之腳踏車驅動 β 機構，俾具結構簡單、縮減佔用空間、降低製造成本，另 ^ 可降低車體重心，以及可充分利用變速器功能，進而節省 電力並增加爬坡力等特色及功效者。 【先前技術】 按，為提升腳踏車之使用便利性及減輕腳踏車騎士之 體力負擔，故近年來陸續有以電動馬達取代人力之電動腳 踏車問世並廣受消費者青睞。 _ 目前一般電動腳踏車之馬達傳動設計，約可區分為下 列四類： ， 第一類：馬達係組設在前或後車輪外，而馬達軸與被 . 驅動之後車輪軸平行。 第二類：馬達係組設在後或前車輪外之支架上，而馬 達軸與該被驅動之車輪軸垂直。 第三類：馬達係直接與前或後車輪結合，而直接成為 5 1296596 車輪之心軸。其特色為馬達之主體係隨著前或後車輪轉 動。 第四類：馬達係與腳踏傳動轴垂直，經由傳動元件而 驅動前鏈輪。 目前為止，市面上大部分電動腳踏車的驅動機構多為 前述第一、二、三類設計，第四類則係為少數。而該第一 _ 類傳動方式概如第一圖之公告第522964號新型專利所 示，該習用電動腳踏車之馬達A1係組設在後車輪外，而 使馬達軸與被驅動之後車輪軸呈平行設置，並藉由傳動元 件A2帶動固設在後車輪之鏈輪A3。該第二類傳動方式係 如第二圖所示，該習用電動腳踏車之馬達B1係組設在後 車輪外之後車架B2上，而使馬達軸與被驅動之後車輪轴 呈垂直設置，並藉由傳動元件帶動固設在後車輪之鏈輪 • B3。該第三類傳動方式則如第三圖之公告第M259755號及 第四圖之公告第467091號新型專利所示，請參閱第三圖， . 該習用電動腳踏車之馬達係直接與前車輪結合，使馬達之 ， 軸心係為車輪之軸心，並以馬達與傳動元件連結而驅動前 車輪轉動；續請參閱第四圖，該習用電動腳踏車之馬達D1 係直接與後車輪結合，並使馬達D1與傳動元件連結而驅 動後車輪轉動。關於第四類傳動方式則請參閱第五圖之公 6 1296596 告第192351號及第六圖之公告第519087號新型專利，如 第五圖所示，習用電動腳踏車之馬達E1係透過轉向傳動 元件E4及鏈條E5而與前鏈輪E2連結，該馬達E1與腳踏 傳動軸E3呈垂直設置，其主要係利用與前鏈輪E2平行之 轉向傳動元件E4而令鏈條E5驅動前鏈輪E2，進行而驅使 ^ 後車輪轉動；又如第六圖所示，習用電動腳踏車之馬達F1 I 係與前鏈輪F2相連結，而使馬達F1與腳踏傳動軸F3呈 垂直設置，並藉由一組傳動裝置F5 (如第七圖所示）驅動 前鏈輪F2，令前鏈輪F2以鏈條F4帶動後車輪轉動。然而 前述之四類系統係分別具有如下所述之缺點·· 1、第一、二、三類系統之傳動方式，皆係設計將馬 達（如人1、61、01、£1)直接對前車輪或後車輪驅動，如 此一來，腳踏車將無法裝設變速器及產生變速功能。於整 ⑩ 體上，除了將較裝有變速器者耗費電力以外，其爬坡力亦 嫌不足。 , 2、第一類傳動方式，如第一圖所示，由於馬達A1 . 係平行裝置在後車輪外，而後車輪之半徑不小，因而需要 較長的鏈條A4 (或皮帶）相連結，相對的其成本將較高且 有鏈條A4(或皮帶）易脫落之弊。 3、第二類傳動方式，如第二圖所示，其馬達B1必 7 1296596 須附加成對的傘狀裔輪作為傳動元件，以改變傳動方向， 使之與車輪軸平行方能驅動。由於齒輪組係精密機械元 件，故除須考慮造價成本外，亦須考量其適切潤滑的問 題；再者，此類傳動方式之馬達B1須裝置在後車架B2的 一邊，整體上，電動自行車的重量將嚴重的左右不平衡， 另若馬達係裝置在後車輪外，它亦將因佔了相當的空間而 不易再加裝可供被載者站立的踏桿。 4、 第二類傳動方式，如第三圖所示其馬達係包覆於 前輪ci的心軸内部，而馬達的主體係會隨著前輪ci轉 動；又如第四圖所示，其馬達耵係固設於後輪D2的心軸， 而馬達的主體係會隨著後輪D2轉動。此類型傳動方式所 使用的馬達均非-般規格品，而需要特別訂製，其製造成 本較高，且當動平衡沒做好時，車子行進時會產生上下跳 動之現象，另外，此類型的車輪亦非標準品，同樣需要另 外‘造’同樣產生製造成本較高之困擾。 5、 第四類傳動方式係屬極為少數，如第五圖所示的 設計，於馬達E1作動時，亦將同時帶動腳踏板與前鍵輪 E2，故採電動模式行進時，使用者必須將腳抬高，以避免 被腳踏板打到，同時因連帶帶動腳踏板轉動而增加負重， 致造成電能之浪費及縮減電池之徂+ 、電時間；又如第六圖所 8 1296596 示的設計，則因整個傳動裝置F5結構複雜且佔有相當重 量及體積，再加上傳動裝置F5與前鏈輪F2設於同側（如 第七圖所示），一方面將造成自行車左右重量的嚴重不平 衡，另一方面則因實際上空間的限制，使傳動裝置F5裝 • 設不易，如勉強裝設，強度上亦須考量；再者，如第六圖 ^ 所示之傳動方式中所運用到之傳動裝置F5概如第七圖所 _ 示，該傳動裝置F5係包含一單向傳動元件F51，該單向傳 動元件F51之結構特徵如同第八圖所示，由於其不但不是 標準規格品的組合，且整體形狀極為複雜，故製造成型及 加工過程極為困難且成本甚高。除此之外，它在支架之腳 踏轉軸處亦須另外改造。 6、前述四類之傳動設計在沒電力而必須以腳踏力驅 動時，都有必須同時帶動馬達軸之問題產生，由於馬達的 • 轉子與定子間有磁力作用，致使使用者會比騎一般腳踏車 須付出額外之力氣，而感到費力。 η ， 有鑑於此，吾等發明人乃潛心進一步研究電動腳踏車 之驅動機構並著手進行研發及改良，期以一較佳設作以解 決上述問題，且在經過不斷試驗及修改後而有本發明之問 1296596 【發明内容】 緣是，本發明之目的係為提供一種電動腳踏車之驅動 機構改良，主要具結構簡單、縮減佔用空間、降低製造成 本，另車體左右重量平衡且可降低車體重心，以及可充分 * 利用變速器功能，進而節省電力並增加爬坡力等特色及功 ’ 效。 為達致以上目的，吾等發明人特別設計一種電動腳踏 車之驅動機構改良，該驅動機構係設置於電動腳踏車之五 通管一侧，包含第一及第二套筒、第一、第二單向傳動元 件、數組軸承、一前鏈輪、一傳動元件，及一固設於車架 之電動馬達，其中，第一套筒係供電動腳踏車之腳踏轉軸 穿設，第一套筒與腳踏轉軸之間設置第一單向傳動裝置， • 第一套筒外部則固設第二單向傳動裝置與前鏈輪，第二單 向傳動裝置外部復設置第二套筒，且第二套筒外部設傳動 < 元件俾與電動馬達相連結，又，第一、第二單向傳動裝置 , 係呈反向設置且二側皆設有轴承；藉之，令電動馬達及腳 踏轉軸可以分別驅動第一套筒及前鏈輪，進而以鏈條帶動 後輪者。 據上所述之電動腳踏車之驅動機構改良，其中，第一 1296596 單向傳動裝置具一外環部，外環部係與第一套筒内壁結 合，其内環面成型有齒槽，外環部内設一内環部，内環部 係與腳踏轉軸結合，其外環面設有若干可外張及收合之制 齒件，該等制齒件係可外張抵制於外環部之齒槽作單向傳 < 動；藉之，令腳踏轉軸透過第一單向傳動裝置進而帶動第 一套筒及前鏈輪作單向傳動。 I 據上所述之電動腳踏車之驅動機構改良，其中，第二 單向傳動裝置具一外環部，外環部係與第二套筒内壁結 合，其内環面成型有齒槽，外環部内設一内環部，内環部 係與第一套筒外壁結合，其外環面設有若干可外張及收合 之制齒件，該等制齒件係可外張抵制於外環部之齒槽作單 向傳動；藉之，令第二套筒透過第二單向傳動裝置進而帶 動第一套筒及前鏈輪作單向傳動。 • 據上所述之電動腳踏車之驅動機構改良，其中，該傳 動元件係可為鏈輪或皮帶輪，並以鏈條或皮帶與電動馬達 . 相連結者。 % 【實施方式】 關於吾等發明人之技術手段，茲舉一種較佳實施例配 合圖式於下文進行詳細說明，俾供鈞上深入了解並認同 11 1296596 本發明。 首先明’閱第九圖及第十圖所示，本發明之驅動機構 •主要係裝設於電動腳踏車之坐塾立w下方之五通管u .―側’主要包含第-及第二套筒2、3、第一及第二單向 傳動元件4、5、數組軸承6、一前鍵輪7、一傳動元件 # 8及-固設於電動腳踏車工之車架適當位置處之電動馬 達9，其中： 該第一套筒2係設置於電動腳踏車之五通t n 一侧 且呈同軸排列’令電動腳踏車之腳踏轉軸12穿設於五通 官11與第-套筒2中，第—套筒2與腳踏轉軸12之間設 置第-單向傳動裝置4，第一單向傳動裝置4兩侧皆搭配 裝設有軸承6 ;第一套筒2外部則固設第二單向傳動裝置 籲5與前鏈輪7，第二單向傳動裝置5兩側亦搭配裝設有軸 承6，且其外部復設置第二套筒3，且第二套筒3外部設 * 一傳動元件8俾與電動馬達9相連結，又，第一、第二單 • 向傳動裝置4、5係呈反向設置（如第十圖所示），且， 第二單向傳動裝置5外部之傳動元件8係可為鏈輪或皮 帶輪，並搭配以鏈條或皮帶81而與電動馬達9相連結。 續請參閱第十圖所示，該第一單向傳動裝置4係可為 12 1296596 一棘輪組，同具一外環部41，外環部41係與第一套筒2 内壁結合，其内環面成型有齒槽411，外環部41内設一内 環部42，内環部42係與腳踏轉軸12結合，其外環面設有 若干可外張及收合之制齒件421，該等制齒件421係可外 ‘ 張抵制於外環部41之齒槽411作單向傳動；藉之，令腳 ' 踏轉軸12可透過第一單向傳動裝置4進而可以帶動第一 I 套筒2及前鏈輪7作單向傳動。 此外，該第二單向傳動裝置5亦可為一棘輪組（同請 參閱第十圖所示），主要具一外環部51，外環部51係與第 二套筒3内壁結合，其内環面成型有齒槽511，外環部51 内設一内環部52，内環部52係與第一套筒2外壁結合， 其外環面設有若干可外張及收合之制齒件521，該等制齒 件521係可外張抵制於外環部51之齒槽511作單向傳動； ❿ 藉之，令電動馬達9可透過鏈條或皮帶81、傳動元件8、 第二套筒3及第二單向傳動裝置5，進而帶動第一套筒2 . 及前鏈輪7作單向傳動。 ， 藉以上設置，腳踏車騎士可依照自己之需求及喜好選 擇「腳踏模式」或「電動模式」二種驅動模式中的任一種 方式；舉例而言，當電動腳踏車之電動馬達9尚未啟動而 呈「腳踏模式」時，只需踩動腳踏轉動裝置（即電動腳踏 13 1296596 車之踏板）即可帶動腳踏轉軸12、第一單向傳動裝置4之 内環部42、外環部41、第一套筒2及前鏈輪7 (如第十 一圖所示），進而以鏈條驅動後輪俾帶動電動腳踏車前 進，此時第二單向傳動裝置5之内環部52係呈空轉狀態， • 而其外環部51、第二套筒3與傳動元件8則係呈靜止狀 ^ 態；反之，當啟動電動馬達9使電動腳踏車切換成「電動 I 模式」時，電動馬達9將透過鏈條或皮帶81及傳動元件 8帶動第二套筒3、第二單向傳動裝置5之外環部51、内 環部52、第一套筒2及前鏈輪7 (如第十二圖所示），進 而以鏈條驅動後輪俾帶動電動腳踏車前進，此時第一單向 傳動裝置4之外環部41係呈空轉狀態，而其内環部42及 腳踏轉軸12則呈靜止狀態者。 # 又，本發明之設作除可提供「電動驅動」及「腳踏驅 動」二種驅動模式供腳踏車騎士選擇切換使用以外，只要 , 再裝設一組離合裝置即可令本發明之腳踏車兼具「復健模 、 式」，其主要係利用離合裝置使電動馬達9亦可帶動腳踏 車之腳踏轉軸12，進而以腳踏轉軸12帶動踏板及腳踏車 騎士雙腿進行踩踏運動，並產生良好復健功效，請參閱第 十三圖所示，本發明主要係在第一套筒2上設置一離合裝 14 1296596 置，其中，該離合裝置係可為一螺桿21，該螺桿21係徑 向鎖設於第一套筒2上，且螺桿21之螺紋段係可***作 迫入腳踏轉轴12之凹槽121中，使第一套筒2與腳踏轉 軸12結合為一體（如第十四圖所示），如此一來，當電動 馬達9帶動第一套筒2時，該第一套筒2將帶動内部之腳 踏轉軸12及踏板同步轉動，藉之，使用者可先將本發明 之腳踏車騎到或運送到適當位置處（例如風光明媚且空氣 清新的風景區）再將腳踏車架起定位，接下來便可扶持需 進行復健者坐上腳踏車，利用腳踏車之「復健模式」強迫 附件者之雙腿進行踩踏運動，俾發揮運動及復健功效者。 惟，本文所舉之螺桿21乃本發明離合裝置中之較佳實施 例之一而已，並非以此即限定本發明實施之範圍，特予敘 明。 經由上述說明可知本發明具有以下之優點，概分述如 下： 1、 使用便利性佳：同時具有二種操作模式供使用者 隨時切換，且無須手動操作而可自動切換，極為簡便而快 速，具極佳之使用便利性。 2、 結構精簡：相較於習知結構而言，明顯可見本發 15 1296596 明之結構更為精簡’不僅可以縮減整體體積、避免佔用過 多空間，更具簡化結構之功效。 3、 降低製造成本：由於本發明之第一及第二單向傳 . 動裝置係可購買市售之規格品直接裝設使用，且就電動腳 踏車車架而言，其結構方面（例如五通管部分）亦無變更 設計之處，故無須另外訂製車架，進而可以簡化製造加工 φ 程序並縮減製造成本。 4、 重心可輕易維持平衡：本發明可藉由調整電動馬 達左右位置之方式來調整腳踏車之整體重心，可確保腳踏 車兩侧重量保持平衡，更無因為單侧增設傳動元件之緣 故，導致車體失去平衡之虞。 5、 可充分利用變速器功能：由於本發明係針對前鏈 鲁輪做「腳踏模式」與「電動模式」自動切換，故後輪部份 之變速器並未受驅動模式之影響，因此騎士可切換裝設於 . ，輪之變速器（齒輪），使腳踏車發揮變速功能進而可以 、 p省電力、或增加腳踏車之扭力而提升腳踏車之爬坡力。 ^综上所述，本發明之電動腳踏車之驅動機構改良所揭 之枝術手段確能有效解決習知驅動裝置材積過大、製造 為、成本過高及使用不便···等問題，並達致預期之目的 16 1296596 與功效，且申請前未見諸於刊物、未曾公開使用且具長遠 進步性，誠屬專利法所稱之發明無誤，爰依法提出申請， 懇祈鈞上惠予詳審並賜准發明專利，至感德馨。 惟以上所述者，僅為本發明之數種較佳實施例，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 > 範圍及發明說明書内容所作之等效變化與修飾，皆應仍屬 本發明專利涵蓋之範圍内。 【圖式簡單說明】 第一圖係習用第一類傳動方式之電動腳踏車外觀示意圖。 第二圖係習用第二類傳動方式之電動腳踏車外觀示意圖。 第三圖係習用第三類傳動方式之電動腳踏車外觀示意圖一。 > 第四圖係習用第三類傳動方式之電動腳踏車外觀示意圖二。 第五圖係習用第四類傳動方式之電動腳踏車外觀示意圖一。 第六圖係習用第四類傳動方式之電動腳踏車外觀示意圖二。 第七圖係第六圖之傳動裝置剖視示意圖。 第八圖係第七圖之單向傳動元件之結構示意圖。 第九圖係本發明裝設於車架上之結構示意圖。。 第十圖係本發明驅動機構之A-A方向剖視示意圖。 第十一圖係本發明之腳踏模式驅動示意圖。 17 1296596 第十二圖係本發明之電動模式驅動示意圖。 第十三圖係本發明第 -套筒裝设離合1置之結構 第十四圖係本發明離合裝置之使用狀態示意圖。 【主要元件符號說明】 【習用部分】 A1 馬達 A2—傳動元件 A3 鏈輪 A4—鍵條 馬達 B2-一車架 B3 鏈輪 C1 -一前輪 D1 馬達 D2-一後輪 E1-—馬達 E2—前鏈輪 E3—-腳踏傳動軸 E4—轉向傳動元件 E5 鏈條 F1 -一馬達 F2 前鏈輪 F3-一腳踏傳動元件 F4 鏈條 F5—傳動裝置 F51-—單向傳動元件 【本發明部分】 1---坐墊立桿 11---五通管 12-一腳踏轉軸 121 —凹槽 18 1296596 2 — 第一套筒 21 — 3 — 第二套筒 4-- 41 — 外環部 411- 42— 外環部 421- 5 — 第二單向傳動裝置 51 — 511 — -齒槽 52— 521 — -制齒件 6- 7 — 前鏈輪 8 -- 81 — 鏈條或皮帶 9-- 螺桿 第一單向傳動裝置 _齒槽 -制齒件 外環部 内環部 轴承 傳動元件 電動馬達1296596 IX. Description of the Invention: [Technical Field] The present invention relates to an improved research and development of a driving mechanism for an electric bicycle, and more particularly to a bicycle driving β mechanism having two driving modes of electric and pedaling, the cooker has a simple structure. Reducing the space and reducing the manufacturing cost, and reducing the weight of the car, and fully utilizing the transmission function, thereby saving power and increasing the climbing power and other features and functions. [Prior Art] In order to improve the ease of use of the bicycle and reduce the physical burden of the bicycle rider, electric bicycles have been introduced in recent years to replace the human electric bicycles and have been widely favored by consumers. _ At present, the motor drive design of electric bicycles can be divided into the following four categories: First, the motor system is set outside the front or rear wheels, and the motor shaft is parallel to the wheel shaft after being driven. The second type: the motor is assembled on a bracket outside the rear or front wheel, and the motor shaft is perpendicular to the driven wheel axle. The third type: the motor is directly combined with the front or rear wheel, and directly becomes the mandrel of the 5 1296596 wheel. It features a main motor system that rotates with the front or rear wheels. The fourth category: the motor is perpendicular to the pedal drive shaft and drives the front sprocket via the transmission element. So far, the driving mechanisms of most electric bicycles on the market are mostly the first, second and third types of designs mentioned above, and the fourth category is a minority. And the first type of transmission mode is as shown in the new patent of No. 522964 of the first figure. The motor A1 of the conventional electric bicycle is set outside the rear wheel, and the motor shaft is parallel to the wheel shaft after being driven. It is arranged to drive the sprocket A3 fixed to the rear wheel by the transmission element A2. The second type of transmission is as shown in the second figure. The motor B1 of the conventional electric bicycle is assembled on the rear frame B2, and the motor shaft is vertically disposed after being driven. The sprocket fixed to the rear wheel is driven by the transmission element • B3. The third type of transmission method is shown in the new patent of the publication No. M259755 of the third figure and the publication No. 467091 of the fourth figure. Please refer to the third figure. The motor of the electric bicycle is directly coupled with the front wheel. The shaft of the motor is the axis of the wheel, and the front wheel is driven by the connection of the motor and the transmission element. For the fourth embodiment, the motor D1 of the conventional electric bicycle is directly coupled with the rear wheel and the motor D1 is coupled to the transmission element to drive the rear wheel to rotate. For the fourth type of transmission, please refer to the new patent of the fifth figure, No. 6 1296596, No. 192351 and the sixth figure, No. 519087. As shown in the fifth figure, the motor E1 of the conventional electric bicycle transmits the steering transmission element. The E4 and the chain E5 are coupled to the front sprocket E2. The motor E1 is disposed perpendicular to the pedal drive shaft E3. The main drive ejector E2 is driven by the chain E5 by using the steering transmission element E4 parallel to the front sprocket E2. The driving of the rear wheel is performed; as shown in the sixth figure, the motor F1 I of the conventional electric bicycle is coupled with the front sprocket F2, and the motor F1 and the pedal driving shaft F3 are vertically disposed, and by a The group transmission F5 (shown in the seventh figure) drives the front sprocket F2 to rotate the front sprocket F2 with the chain F4. However, the four types of systems mentioned above have the following disadvantages: 1. The transmission modes of the first, second and third types of systems are designed to directly drive the motor (such as human 1, 61, 01, £1) directly to the front. The wheel or rear wheel drive, so that the bicycle will not be able to install the transmission and generate the shifting function. On the whole body, in addition to the power consumption of the gearbox, the climbing power is not enough. 2, the first type of transmission, as shown in the first figure, because the motor A1. Parallel device is outside the rear wheel, and the radius of the rear wheel is not small, so a longer chain A4 (or belt) is required to be connected. The cost will be higher and there is a disadvantage that the chain A4 (or belt) is easy to fall off. 3. The second type of transmission mode, as shown in the second figure, the motor B1 must be 7 1296596 to be attached with a pair of umbrella-shaped wheels as the transmission element to change the transmission direction so that it can drive parallel to the wheel axis. Since the gear set is a precision mechanical component, in addition to the cost of construction, it is also necessary to consider the problem of proper lubrication. Furthermore, the motor B1 of this type of transmission must be mounted on the side of the rear frame B2. Overall, the electric bicycle The weight will be seriously unbalanced. If the motor is installed outside the rear wheel, it will not be able to add a pedal for the carrier to stand because of the considerable space. 4, the second type of transmission, as shown in the third figure, the motor is wrapped inside the mandrel of the front wheel ci, and the main system of the motor will rotate with the front wheel ci; as shown in the fourth figure, the motor 耵The mandrel is fixed to the rear wheel D2, and the main system of the motor rotates with the rear wheel D2. The motors used in this type of transmission are not of the general specifications, but require special ordering, and the manufacturing cost is high. When the dynamic balance is not completed, the car will jump up and down when traveling. In addition, this type The wheels are also not standard, and the same need to create 'created' also causes high manufacturing costs. 5. The fourth type of transmission system is very few. As shown in the fifth figure, when the motor E1 is actuated, the pedal and the front key wheel E2 will also be driven at the same time. Therefore, when the electric mode is used, the user must Raise the foot to avoid being hit by the foot pedal, and increase the load due to the rotation of the pedal, causing waste of electric energy and reducing the battery's 徂+, electric time; as shown in Figure 6 1296596 The design of the whole transmission F5 is complicated and occupies considerable weight and volume. In addition, the transmission F5 and the front sprocket F2 are arranged on the same side (as shown in the seventh figure), which will cause the weight of the bicycle on the one hand. Serious imbalance, on the other hand, due to the actual space constraints, the transmission device F5 is not easy to install, such as barely installed, the strength must also be considered; in addition, as shown in Figure 6 The transmission device F5 is as shown in the seventh figure. The transmission device F5 includes a one-way transmission component F51. The structural characteristics of the one-way transmission component F51 are as shown in the eighth figure, because it is not only a standard specification. Combination of products The overall shape and extremely complex, and therefore molding manufacturing process extremely difficult and very high cost. In addition, it must be modified at the foot of the bracket. 6. The above four types of transmission design have the problem that the motor shaft must be driven at the same time when there is no electric power and must be driven by the pedaling force. Because the motor has a magnetic force between the rotor and the stator, the user will be more than riding. The bicycle has to pay extra strength and feels laborious. η , In view of this, our inventors are concentrating on further research on the driving mechanism of electric bicycles and proceeding with research and development and improvement, with a better design to solve the above problems, and after continuous trial and modification, the present invention [1] The present invention aims to provide an improved driving mechanism for an electric bicycle, which has the advantages of simple structure, reduced space occupation, and reduced manufacturing cost, and the left and right weight balance of the vehicle body can reduce the weight of the vehicle. And the ability to fully utilize the transmission function to save power and increase the climbing power. In order to achieve the above objectives, the inventors have specially designed an improvement of the driving mechanism of the electric bicycle, which is disposed on the side of the five-way pipe of the electric bicycle, and includes the first and second sleeves, the first and the second single a transmission component, an array bearing, a front sprocket, a transmission component, and an electric motor fixed to the frame, wherein the first sleeve is powered by the pedal of the bicycle, the first sleeve and the foot A first one-way transmission device is disposed between the stepping shafts, a second one-way transmission device and a front sprocket are fixed on the outside of the first sleeve, and a second sleeve is disposed on the second one-way transmission device, and the second sleeve is disposed The external drive of the cylinder is connected to the electric motor, and the first and second one-way transmissions are arranged in opposite directions and have bearings on both sides; thereby, the electric motor and the pedal can be rotated. The first sleeve and the front sprocket are respectively driven to drive the rear wheel with a chain. According to the driving mechanism improvement of the electric bicycle described above, the first 1296596 one-way transmission device has an outer ring portion, and the outer ring portion is combined with the inner wall of the first sleeve, and the inner ring surface is formed with a tooth groove, the outer ring The inner ring portion is provided with an inner ring portion, and the inner ring portion is combined with the pedal shaft, and the outer ring surface is provided with a plurality of teeth members which can be externally stretched and folded, and the tooth members are externally stretched to resist the outer ring portion. The tooth groove is unidirectionally transmitted; thereby, the pedal shaft is transmitted through the first one-way transmission device to drive the first sleeve and the front sprocket for one-way transmission. According to the improvement of the driving mechanism of the electric bicycle, the second one-way transmission device has an outer ring portion, and the outer ring portion is combined with the inner wall of the second sleeve, and the inner ring surface is formed with a tooth groove and an outer ring. An inner ring portion is disposed in the inner portion, and the inner ring portion is combined with the outer wall of the first sleeve, and the outer ring surface is provided with a plurality of teeth members which can be externally stretched and folded, and the tooth members are externally stretched against the outer ring. The tooth groove of the portion is a one-way transmission; the second sleeve is transmitted through the second one-way transmission device to drive the first sleeve and the front sprocket for one-way transmission. • Improvements in the drive mechanism of an electric bicycle as described above, wherein the drive element can be a sprocket or a pulley and is coupled to the electric motor by a chain or belt. [Embodiment] With regard to the technical means of our inventors, a preferred embodiment of the present invention will be described in detail below, and the present invention will be further understood and recognized. First of all, as shown in the ninth and tenth drawings, the driving mechanism of the present invention is mainly installed in the five-way pipe u under the seat of the electric bicycle. The side side mainly includes the first and second sets. The cylinders 2, 3, the first and second one-way transmission elements 4, 5, the array bearing 6, a front key wheel 7, a transmission element #8, and an electric motor fixed at an appropriate position of the frame of the electric bicycle 9. The first sleeve 2 is disposed on the side of the five-way tn of the electric bicycle and arranged coaxially. The pedal 12 of the electric bicycle is disposed in the five-way official 11 and the first sleeve 2, - a first-way transmission device 4 is disposed between the sleeve 2 and the pedal shaft 12, and the first one-way transmission device 4 is equipped with a bearing 6 on both sides; the second sleeve 2 is fixed on the outside of the first sleeve 2 The transmission device 5 and the front sprocket 7 are also provided with bearings 6 on both sides of the second one-way transmission device 5, and the second sleeve 3 is externally disposed, and the second sleeve 3 is externally provided with a transmission component 8俾 is connected to the electric motor 9, and the first and second single-direction transmissions 4, 5 are reversely arranged (as shown in the tenth figure), and The transmission element 8 external to the second one-way transmission 5 can be a sprocket or a pulley, and is coupled to the electric motor 9 by a chain or belt 81. Continuing to refer to the tenth figure, the first one-way transmission device 4 can be a 12 1296596 ratchet set having the same outer ring portion 41, and the outer ring portion 41 is coupled to the inner wall of the first sleeve 2, The toroid is formed with a tooth groove 411, and the outer ring portion 41 is provided with an inner ring portion 42. The inner ring portion 42 is coupled with the pedal shaft 12, and the outer ring surface is provided with a plurality of teeth 421 which can be externally stretched and folded. The toothed member 421 can be externally biased against the slot 411 of the outer ring portion 41 for one-way transmission; thereby, the foot 'turning shaft 12 can pass through the first one-way transmission 4 and can then drive the first I sleeve 2 and front sprocket 7 are driven in one direction. In addition, the second one-way transmission device 5 can also be a ratchet group (see also FIG. 10), which mainly has an outer ring portion 51, and the outer ring portion 51 is coupled with the inner wall of the second sleeve 3. The inner ring surface is formed with a tooth groove 511, and the outer ring portion 51 is provided with an inner ring portion 52. The inner ring portion 52 is coupled with the outer wall of the first sleeve 2, and the outer ring surface is provided with a plurality of outer sheets and foldable portions. The tooth member 521 is externally slidably resisted by the slot 511 of the outer ring portion 51 for one-way transmission; 借 by way, the electric motor 9 can be transmitted through the chain or belt 81, the transmission member 8, and the second The sleeve 3 and the second one-way transmission 5 further drive the first sleeve 2 and the front sprocket 7 for one-way transmission. With the above settings, the bicycle rider can choose any of the two modes of "foot pedal mode" or "electric mode" according to his own needs and preferences; for example, when the electric motor 9 of the electric bicycle has not been started yet, In the "foot pedal mode", the pedal shaft 12, the inner ring portion 42 of the first one-way transmission 4, and the outer ring portion can be driven by simply stepping on the pedal rotation device (ie, the pedal of the electric pedal 13 1296596). 41. The first sleeve 2 and the front sprocket 7 (as shown in FIG. 11) further drive the rear wheel rim to drive the electric bicycle forward, and the inner ring portion 52 of the second one-way transmission device 5 is In the idling state, the outer ring portion 51, the second sleeve 3 and the transmission element 8 are in a stationary state; otherwise, when the electric motor 9 is activated to switch the electric bicycle to the "electric I mode", the electric motor 9 The second sleeve 3, the outer ring portion 51 of the second one-way transmission 5, the inner ring portion 52, the first sleeve 2 and the front sprocket 7 (such as the twelfth) will be driven by the chain or belt 81 and the transmission member 8. Figure shows), and then drive the rear pedal with the chain to drive the electric pedal When the vehicle advances, the outer ring portion 41 of the first one-way transmission device 4 is in an idling state, and the inner ring portion 42 and the pedal shaft 12 are in a stationary state. # Further, in addition to providing two types of driving modes, "electric drive" and "foot drive", the bicycle of the present invention can be used as a bicycle rider, as long as a set of clutch devices is installed to make the bicycle of the present invention It has a "rehabilitation mode," which mainly uses the clutch device to make the electric motor 9 also drive the pedal 12 of the bicycle, and then pedals the pedals and the legs of the bicycle rider with the pedal shaft 12, and produces a good complex For the purpose of the utility model, as shown in the thirteenth embodiment, the present invention mainly provides a clutch assembly 14 1296596 on the first sleeve 2, wherein the clutch device can be a screw 21, which is a radial lock. The first sleeve 2 is disposed on the first sleeve 2, and the threaded section of the screw 21 is operable to be forced into the groove 121 of the pedal shaft 12, so that the first sleeve 2 and the pedal shaft 12 are integrated into one body (such as the tenth As shown in FIG. 4, when the electric motor 9 drives the first sleeve 2, the first sleeve 2 will drive the internal pedal shaft 12 and the pedal to rotate synchronously, and the user can first The invented bicycle rides or is transported to the appropriate position Place the bicycle (such as a beautiful scenery with fresh air) and then position the bicycle. Then you can support the person who needs to be rehabilitated on the bicycle. Use the "recovery mode" of the bicycle to force the legs of the accessory to step on. Exercise, exercise and rehabilitation. However, the screw 21 described herein is one of the preferred embodiments of the clutch device of the present invention, and is not intended to limit the scope of the practice of the present invention. Through the above description, the present invention has the following advantages, and is generally described as follows: 1. Good convenience: two modes of operation are available for the user to switch at any time, and can be automatically switched without manual operation, which is extremely simple and fast, with Excellent ease of use. 2, the structure is streamlined: compared to the conventional structure, it is obvious that the structure of the present invention is more streamlined' not only can reduce the overall volume, avoid occupying too much space, and simplify the structure. 3. Reducing the manufacturing cost: Since the first and second one-way transmission devices of the present invention can be directly installed and used by purchasing commercially available specifications, and in terms of the electric bicycle frame, the structural aspects thereof (for example, five links) The pipe part has no change in design, so there is no need to customize the frame, which simplifies the manufacturing process and reduces the manufacturing cost. 4. The center of gravity can easily maintain the balance: the present invention can adjust the overall center of gravity of the bicycle by adjusting the left and right positions of the electric motor, thereby ensuring that the weight of both sides of the bicycle is balanced, and the vehicle body is not added due to the transmission component on one side. Lose balance. 5. The transmission function can be fully utilized: Since the invention automatically switches between the "foot pedal mode" and the "electric mode" for the front chain Lu wheel, the transmission of the rear wheel portion is not affected by the driving mode, so the knight can switch The transmission (gear) installed in the wheel enables the bicycle to perform the shifting function, thereby saving power, or increasing the torque of the bicycle to enhance the climbing force of the bicycle. In summary, the improved driving mechanism of the electric bicycle of the present invention can effectively solve the problems of excessive volume, manufacturing, high cost and inconvenient use of the conventional driving device, and achieve The intended purpose 16 1296596 and its efficacy, and not seen in the publication before the application, has not been publicly used and has long-term progress, the inventions claimed in the Patent Law are correct, and the application is filed according to law. Granting a patent for invention, to the sense of Dexin. However, the above is only a few preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the present invention and the contents of the description of the invention. All should remain within the scope of the invention patent. [Simple description of the diagram] The first diagram is a schematic diagram of the appearance of an electric bicycle using the first type of transmission. The second figure is a schematic view of the appearance of an electric bicycle using the second type of transmission. The third figure is a schematic view of the appearance of an electric bicycle using the third type of transmission. > The fourth figure is a schematic view of the appearance of an electric bicycle using the third type of transmission. The fifth figure is a schematic view of the appearance of an electric bicycle using the fourth type of transmission. The sixth figure is a schematic view of the appearance of an electric bicycle using the fourth type of transmission. Figure 7 is a schematic cross-sectional view of the transmission of the sixth figure. The eighth figure is a schematic structural view of the unidirectional transmission component of the seventh figure. The ninth drawing is a schematic view of the structure of the present invention mounted on a frame. . Figure 11 is a cross-sectional view showing the drive mechanism of the present invention in the A-A direction. The eleventh diagram is a schematic diagram of the pedal mode drive of the present invention. 17 1296596 Fig. 12 is a schematic view of the electric mode drive of the present invention. Thirteenth Diagram is a structure of the first embodiment of the present invention. The fourteenth embodiment is a schematic view showing the state of use of the clutch device of the present invention. [Main component symbol description] [Available part] A1 Motor A2—Transmission component A3 Sprocket A4—Keybar motor B2-One frame B3 Sprocket C1 - One front wheel D1 Motor D2-One rear wheel E1--Motor E2—Previous Sprocket E3—Pedal Drive Shaft E4—Steering Transmission Element E5 Chain F1 - One Motor F2 Front Sprockets F3- One Pedal Transmission Element F4 Chain F5—Transmission F51—One-way Transmission Element [Invention Section] 1 ---Cushion pole 11---Pipe 12 - One pedal 111 - Groove 18 1296596 2 - First sleeve 21 - 3 - Second sleeve 4- 41 - Outer ring portion 411 - 42 — Outer ring part 421 - 5 - Second one-way transmission 51 - 511 - - Groove 52 - 521 - - Toothed part 6 - 7 - Front sprocket 8 - 81 - Chain or belt 9 - Screw first One-way transmission _ cogging - toothed outer ring inner ring bearing transmission component electric motor
1919