M328416 八、新型說明： 【新型所屬之技術領域】 本創作係關於一種「自行車之動力輔助結構」，尤指一種可提供自 行車辅助動力之動力辅助結構。 【先前技術】 - 按，習用之自行車結構，大多需要騎乘者腳踏使用，對於體力較 差’或者遇到爬坡路段時，對於騎乘者的使用上極為費力，且不方便； · . · 問題’但是’大多數的電動自行車在騎乘使用時，其之動力輔助系統 皆會強制羅動踏板之曲軸臂，使得騎乘者在使用時，極為突兀、不便， 且易造成騎乘者的腿部不適感；是故，睽諸讓習用之缺失，實有將之 作進一步改良之必要。 本創作人有鑑於目前習用结構仍有改進的地方所以就從事相關 •產品的多年產銷經驗，且針對目前存在的相關間題，深思改善的方法， 在經過衫改細試後，終於創祕—種自行車之動力獅結構。 【新型内容】 緣此本創作之主要目的係在於提供—種可提供輔助動力，以方便 使用者騎乘之自行車之動力辅助結構。 為了達到上述目的，本創作提出了一種自行車之動力輔助結構， 其包括: 踏板組件，該踏板組件係由一第一踏板、一第二踏板、一曲轴 M328416 及一曲軸殼所組成，該曲輪係連接該第一、二踏板，該曲轴殼係用以 設置該曲轴； 一鏈輪組件，該鏈輪組件具有連接到自行車車輪的一鏈及一鏈 輪，而該鏈輪組件具有與該踏板組件之第一踏板連接的超限運轉藤動 件； 一馬達組件； 一減速齒輪组件，該減速齒輪組件連接到該馬達組件，且該減速 •齒輪組件具有一齒輪組件驅動輸出； 一動力辅助躱動組件，該動力辅助藤動组件包含於該曲軸附近以 同心圓安裝的一動力辅助堪動構件’且該動力辅助襄動叙件具有於該 齒輪組件驅動輸出與該鏈輪組件之間連接的一動力辅助騍動，而該動 力輔助驅動連接〆第二超限運轉驅動件，且該動力辅助驅動構件具有 在自行車上的第一與第二動力辅助構件部分，而該動力辅助驅動構件 與談曲轴殼係以同心圓設置在該曲軸的中央轴厨圍。 籲 其中，該動力辅助驅動構件的第二動力辅助構件部分具與該驅動 鏈輪連接的一固定動力，且該動力辅助驅動構件的第一動力輔助構件 部分是經由該動力輔助超限運轉堪動件連接，而與該齒輪組件軀動輸 出連接、 其中，該動力輔助驅動構件是可旋轉安裝在轴承上，且該等轴承 具有與該曲軸殼的動作負載轴承關係，且該曲轴至少部分透遇與該動 力輔助驅動構件的貪載軸承關係中的轴承所支撐^ 以下兹配合本創作較佳實施例之圖式進一步說明如下 M328416 關》^誠、摘作相目技術之人士，得依本說明書之陳述據以實 施。 【實施方式】 百先，請配合參閱第-圖至第四圖所示，本創作為一種自行車之 動力辅麟構，於[圖巾，其赫_自行車臟構係_般典变之自 ‘行車結構，其包括一車架12、一前輪(圖中未示）、一後輪％…手把 (圖中未示）及一驅動組件22 ; _ 其巾，該堪動组件22包含安裝到曲轴殼25的一踏板组件24及一鏈 輪組件26 ’該鏈輪組件包含一前向鏈輪組件28、一堪動鍵％及—後鍵 ':輪組件32。 • 而值得注意的是，本創作進一步包括一動力辅助裝置6〇，該動力 辅助裝置峽62、—減賴輪祕以及—動力辅助组件 66所组成、 而藉由本創作裝設動力辅助裝置60，而可完成下列四個主要操作 ，模式’其之主要操作模式如下： a) 動力輔賴式··其中，自行車騎士腳踏供應動力，且動力辅助组件 66提供動力； b) 唯獨踏板模式：其中，只透過聊踩自行車供應動力； c) 唯獨動力辅助模式：其中，自行車騎士不聊踏提供任何動力，且所 有動力疋透過動力輪出組件供應·以及 d) #慣性滑行無動力模式··其中，自行車是在踏板组件靜止時行進， 且踏板組件或動力輔助驅動系統不傳遞動力。 M328416 該馬達组件62包含馬達68，且其具有啣接一驅動帶子74的動力輸 出滑車輪72;於本較佳實施例中，馬達68具有例如〗1/2匹馬力動力輸 出之馬達輸出，並能以4000 RPM運轉，並可高達8000 RPM。或者， 馬達68可為一電動馬達，亦能力以4000RPM或更高進行運轉。此外， 馬達68可直接安裝到自行車。在更廣泛的範園内，可為從1〇()〇、 1500,2000、2500、3000、3500或4000範圍，高達例如4500、5000、 5500、6000、4000、80〇〇、9〇〇〇、1〇,〇〇〇、11，〇〇〇或i2,〇〇〇 RPM範園’ _馬力明顧可為1/2(或低於1/2)、3/4、1·0、1·75、2·0、2.5、3·0匹馬力或 更1¾。有些設計選項符合某些應用或需求，或利用動力源予以改善等。 該減速齒輪組件64包含一齒輪组件殼76、一動力輸入元件78、一 •減速齒輪組件80及一動力輸出元件82，該齒輪组件殼76包含一輸入端 84 ’且其具有一输入殼組件86及一輸出殼組件90的一輸出端88，該输 入殼組件86及一輪出殼组件9〇係於螺閂92周邊部分連接，而該殼76具 有一縱向中央轴94。 籲 該輪入殼组件86具有平截頭體錐形結構的一端板96與從該端板96 周邊爛向延伸的一圓筒形周邊部分％。 * ： . 該輸出殼组件90包含一碟形端板卿與從該端板100周邊向後延伸 的一周邊部分102。 該螺閂92係經由周邊部分98延伸連接到周邊部分1〇2。在兩周邊部 分％與102之間的放置是一安裝板1〇4的上端、其下端連接到連接到該 曲輛殼25 〇 該螺問92係經由該安裝板104延伸，以將它緊緊連接到該齒輪組件 M328416 殼76 〇該安裝板70可連接到此安裝板104 〇 該動力輸入元件78包含一輸入滑車輪106，且其具有脅接凹槽部分 108的一周邊帶子與一平截頭體錐形主體部分HO、 該滑車輪106具有一螺紋中央孔112，且其連接到以縱轴94可旋轉 安裝的一縱向延伸輸入轴116的後輪入端部分114。 - 該輸入轴116的後面部分是在該輸入殼組件86中透過後端轴承〖17 支撐，且該輸入軸116之後端具有一平衡物118，且前端具有第二平衡 _物120 ,而該輸入轴116的前端122是安裝在端軸承124。後封口 125是放 置於該輸入轴116與該輸入殼組件86之間。 ' 於該輸入轴116的縱向中央部分，其係使用具有外部圓筒形表面 130的一圓筒形離心驅動部128，且該外部圓筒形表面130是與該圓筒形 離心駆動部分128的偏移中央轴132形成同心圓。當軸116旋轉時，該偏 移中央軸132會以縱向中央軸94運轉。 該減速齒輪组件80，包含透過前後轴承138和140安裝到驅動部分 • 128的一連身齒輪組件136 ,如此可與偏移中央轴132形成同心圓❶連身 齒輪組件136包含第一後齒輪部分142與第二前向齒輪部分144。第一齒 輪部分142是放置在後殼組件86周邊部分98的周園固定環齒輪146中。 第一齒輪部分142的螺栓節圓直径是適度小於固定環齒輪146的内部螺 检節圓直徑。隨著第一齒輪部分142與偏移轴132形成同心圓，及隨著 與第一齒輪部分啣接環齒輪146，當轴116以縱軸94旋轉時，齒輪部分 142具有以偏移轴132旋轉運動，並亦具有縱轴94的軌道運動。 ' .'· ..... ‘·.. 相鄰且就在固定環齒輪146前方，具有在轴承150中安裝的可旋轉 8 M328416 安裝環齒輪148，且其菌繞環齒輪148，而且是放置在固定環齒輪146 的前向圓筒形延伸152。環齒輪148前向有一周邊封孔154。放置在此 可旋轉女裝的環啬輪148是該的前向連身凿輪部分144。此前向連身啬 輪部分144的外部直徑是適度小於可旋轉環齒輪148的内部直徑❹如 此’隨著彼此固定連接的第一與第二齒輪部分142與144，連身齒輪组 •件〖36的旋轉可使可旋轉環齒輪148旋轉。第一與第二齒輪部分142與 144的直徑、與環畜輪146與148的内部直徑可選擇，所以減速比率是大 籲約45:1或50:1、或更廣泛窺圍，可低到類似4〇:1、35:1、或3〇:1，或或 許更低、或許高到55:1、60:1、65:1、90:1、75:1、80:1、100:1、125:1、 150:卜200:1、或更高。 V 該輪出元件82包含一輸出殼156，且其具有一後圖筒形部分157， 而且是環齒輪148的前向延伸及固定連接。此圓筒形部分157連接到一 向内階梯部分158，且其進一步前向延伸以連接到一端板16〇。兩部分 157與158與端板160可彼此整個形成。有一輸出軸承構件162 ,以將輪 ，出殼156安裝到前向殼組件9〇。向内階梯殼部分158是經由該轴承124 支撐轴116前端。 最後的輪出構件是一輪出齒輪164，且其安裝到輸出殼156，如此 放置在殼部分158周圍，且向前接觸該殼部分157 〇驅動鏈168的上端 喻接輸出鍵輪164 ’且從其向下延伸到與動力辅助组件66的堪動_接。 前向殼組件90具有適應驅動鏈168的孔口，所以它可延伸穿過殼組件如 以連接動力辅助輪出組件66 〇 因此，保持既有曲轴殼25，及有放置在曲軸殼25的一踏板組件曲 M328416 軸170。分別有左右曲轴臂172與174，且一腳踏板176連接到每一曲軸 臂172和174端。在曲軸的右端，有一輪軸178安裝一踏板駆動靠慣性滑 行離合器180，且其包含連接到輪軸178的一内部離合器構件182、與一 外部離合器構件184，且其透過例如以186顯示螺閂而連接到前向鏈輪 組件28〇 另外，罪知性滑行離合器180的配置，當自行車騎士在動力下爾糖 •向前移動自行車時，兩離合器構件182與184會以驅動關係吻接。然而， _當前向鏈輪组件28正以快於曲軸170旋轉或當踏板组件24靜止時旋 轉，外部離合器構件184將自由旋轉。 … 為了要將我們的注意力轉移到動力辅助组件66，有第二靠慣性滑 -行離合器188與一動力辅助轴190(亦稱為載轴)，其具有離合器188連接 的左端部分。此動力輔助轴190具有一管狀周筒形結構，且同心圓園繞 該曲軸170。此離合器188具有一外部雜合器部分192，且其具有_接該 堪動鏈168的齒輪齒194，所以外部離合器部分192的功能如同一鏈輪 • 194， 離合器188具有一内部離合器構件196，且其安裝到轴19〇的左端部 分198，其端部分198的直徑小於輛190的主要部分的直徑。一軸承構件 200是放置在左端部分198，以提供曲軸170的左端支撐。在離合器188 右邊的轴190附近以同心圓放置及固定連接到曲轴殼25左端是一轉接 頭構件或轉接頭204。此構件204包含一向外輻射延伸凸緣206與一後 者向外延仲圓筒形凸緣208，且這兩凸緣206與208啣接具有一穿孔的該 安裝板104，其中該安裝板104是安裝到凸緣206，且架設構件的側 M328416 表面喻接凸緣208。該轉接頭構件204亦具有一向內延伸圓筒形凸緣 210，且其具有外部螺纹可使它成螺紋進入曲轴殼25的左端。 在曲轴殼25的右端，有一右邊轉接頭構件212，其包含一向内廷伸 圓筒形連接部分214,且此具有脅接曲軸殼25右端部分的内部成螺紋表 面部分之外部螺紋。該轉接頭構件212亦包含一輻射延伸凸緣部分 216 ’且其連接到放置一轴承構件220的向外延伸圓筒形凸緣部分218， 以提供支撐該動力辅助軸190的右端部分。 _ 連接到動力辅助轴190的右端，有一鏈輪連接構件222，其包含一 向内延伸圓筒形連接構件224，並具有内部嫘紋以吻接該動力辅助轴 、190的右端部分。此連接構件222具有一向外階梯部分226，且其内部是 一内部轴承構件228，以提供談曲軸170右端部分支撐，且其外部是該 外部軸承構件220，以提供動力輔助軸190右端部分支撐。 該鏈輪連接構件222進一步包含一鏈輪架設部分23〇，其具有可固 定安裝到安裝有鏈輪環238、240與242的構件232、234與236 〇 _ 請續配合參間第一爵至第四圖所示，當自行車騎士利用聊踩踏自 行車’而沒有任何動力辅助時，曲轴臂172輿174旋轉造成曲轴170旋 轉，内部離合器構件182會喻接外部離合器構件1名4，所以，前向鏈輪 组件26旋轉以將動力傳遞給後輪16。 同時，動力辅助軸190是固定連接到前向鏈輪组件26，並使用舆曲 軸170相同的速度旋轉。隨著動力辅助裝置6〇的靜止，如此一來，靠慣 性滑行離合器188的外部離合器構件192不旋轉，但是，内部離合器構 件196則是自由旋轉。如此，在“准獨踏板”操作模式中，軸承構件2〇〇 'u: : M328416 和228的元件是不旋轉，離合器構件182和184、與離合器180的任何相 對旋轉是不存在。轴承構件202與220的元件會旋轉，且兩離合器元件 196與192可靠慣性滑行' 另外，假設自行車開始上坡，且騎士想要動力辅助操作，馬達位 將會啟動，且馬達62的控制桿將會放置在方便的位置，例如在手把的 .適當位置。 當馬達62速度增加時，輸出鏈輪164的旋轉速度亦會增加;此時， 籲耆外部鏈輪構件194的旋轉速度符合動力辅助轴190的旋轉速度時，離 合器構件192與196將會驅動喻接，所以動力會從馬達62傳遞給動力输 、助轴190而至前向驅動鏈輪26。如此，騎士仍然進行腳踏，及仍然經由 該踏板組件運用驅動力，而該動力辅助裝置60將提供額外動力來維持 想要自行車加速上坡。如此，動力輔助不能強制堪動踏板曲軸臂，此 可提供實質安全因素。 另者，假設自行車騎士已到達山頂，且在小路或道路行進。如果 _騎士感覺疲勞時，騎士只要停止腳踏。在本實施例中，馬達组件62會 仍然操作，且動力仍然會傳遞給動力辅助轴19〇 tr離合器188會在灌動 模式操作，而離合器180會以靠慣性滑行模式操作。因此，動力輔助不 能夠強制驅動踏板曲轴臂，此可提供實質安全因素。 再者’假設自行車是靠慣性滑行下坡，而沒有任何動力辅助，踏 板m是靜止。在此操作模式，兩離合器蘭與188是靠慣性滑行。 此外’應該可確認另一有利特徵是隨著馬達68以非常高娜_運 轉’相較於減速齒輪組件的輸出，馬達68輪出轉力矩是相當非常小， 12 M328416 因此’驅動帶子74上的張力是非常低的。 綜上所逑’本創作自行車之動力辅助結構，有效地改善習用結構 所存在的種種缺點，且本創作之主要技術手段並未見於任何相關之刊 物中’誠符合新型專利之申請要件，爰依法提出申請，懇請鈞局賜 准本創作專利權。 【圖式簡單說明】 第一圖係本創作之立體组合示意圖。 暴第二圖係本創作之組合側面示意圖。 第二圖係本創作之減速齒輪组件之組合剖面示意菌。 …第四圖係本創作之組合剖面示意圖❹ 、【主要元件符號說明】 自行車10 库架12 後輪16 驅動組件22 踏板组件24 曲輛殼25 •鏈輪组件26 前向鏈輪組件28 驅動鏈3(^^^^^^^^^^^^^鏈輪组件32 動力輔助裝置60 馬達組件62 減速齒輪組件64 動力辅助组件66 馬達68 安裝板70 輸出滑車輪72 驅動帶子74 齒輪组件殼76 動力输入元件％ 13 M328416 減速齒輪組件80 輸入端84 輸出端88 輸出殼組件90 縱向中央轴94 、周邊部分98 碟形端板100 •安裝板104 啣接凹槽部分108 、 螺紋中央孔112 ， 後輸入端部分114 平衡物118 前端122 後封口125 鲁離心驅動部I28 軸承 138、140 第一後齒輪部分142 固定環齒輪146 環齒輪148 周邊封孔154 後圓筒形部分157 端板160 動力輸出元件82 輸入殼組件86 螺閂92 端板％ 周邊部分102 輸入滑車輪106 錐形主體部分110 輸入抽116 後端轴承117 第二平衡物120 轴承124 表面130 中央轴132 齒輪組件130 第二前向會輪部分144 轴承150 前向圓筒形延伸152 輸出殼156 向内階梯部分158 輸出轴承構件162 14 M328416 輸出齒輪164 踏板組件曲轴170 脚踏板176 慣性滑行離合器180 外部離合器構件184 、動力辅助轴190 鏈輪194 左端部分198 轉接頭204 、圓筒形凸緣208 右邊轉接頭構件212 延伸凸緣部分216 鏈輪連接構件222 向外階梯部分226 •鏈輪架設部分23G 驅動鏈168 左、右曲轴臂172、174 輪軸178 内部離合器構件182 慣性滑行離合器188 外部離合器部分192 内部離合器構件196 轴承構件200 延伸凸緣206 圓筒形凸緣210 圖筒形連接部分214 凸緣部分218 圓筒形連接構件224 内部軸承構件228 15M328416 VIII. New Description: [New Technology Field] This creation is about a “power assist structure for bicycles”, especially a power assist structure that provides self-propelled auxiliary power. [Prior Art] - According to the conventional bicycle structure, most of them need to be used by the rider's foot. For the poor physical strength' or when encountering the climbing section, it is extremely laborious and inconvenient for the rider to use; The problem 'but' most motorized bicycles, when used for riding, will force the pedal arm of the pedal to make the rider extremely awkward, inconvenient, and easy to cause the rider. The feeling of discomfort in the legs; therefore, the lack of customary use, it is necessary to further improve it. In view of the fact that there are still improvements in the current structure, the creator has been engaged in the production and marketing experience of related products, and has focused on the improvement of the existing problems. After the shirt has been tried, the secret is finally created. The dynamic lion structure of a bicycle. [New Content] The main purpose of this creation is to provide a power assist structure that provides auxiliary power to facilitate the ride of the bicycle. In order to achieve the above object, the present invention provides a bicycle power assisting structure, comprising: a pedal assembly, which is composed of a first pedal, a second pedal, a crankshaft M328416 and a crankcase, the crankset Connecting the first and second pedals, the crankcase is configured to set the crankshaft; a sprocket assembly having a chain and a sprocket coupled to the bicycle wheel, and the sprocket assembly has the pedal assembly a first pedal-connected overrunning cane; a motor assembly; a reduction gear assembly, the reduction gear assembly coupled to the motor assembly, and the reduction gear assembly having a gear assembly drive output; a power assisted swing An assembly, the power assisted rattan assembly includes a power assisted slidable member mounted concentrically adjacent the crankshaft and the power assisted swaying feature has a connection between the gear assembly drive output and the sprocket assembly Power assisted swaying, and the power assisted drive is coupled to the second overrunning drive member, and the power assisted drive member has First and second power portion on the auxiliary member, the drive member and the power assist system talk crank casing concentrically disposed at the center axis of the crankshaft around the kitchen. a second power assisting member portion of the power assist drive member having a fixed power coupled to the drive sprocket, and the first power assisting member portion of the power assist drive member is movable via the power assist overrun Connected to the gear assembly output, wherein the power assist drive member is rotatably mounted on the bearing, and the bearings have a working load bearing relationship with the crankcase, and the crankshaft is at least partially permeable The support of the bearing in the relationship of the load-bearing bearing of the power-assisted drive member is further described below with reference to the drawings of the preferred embodiment of the present invention. The following M328416 is used by those who are interested in the technology. The statement is based on implementation. [Embodiment] Hundreds of first, please refer to the picture shown in Figure-to-fourth, this creation is a kind of bicycle power auxiliary lining, in [Figure towel, its he_ bicycle dirty system _ ordinary code change from ' The driving structure comprises a frame 12, a front wheel (not shown), a rear wheel %...handle (not shown) and a drive assembly 22; _ the towel, the cantilever assembly 22 is mounted to A pedal assembly 24 of the crankcase 25 and a sprocket assembly 26' includes a forward sprocket assembly 28, a movable key % and a rear key ': wheel assembly 32. • It is worth noting that the present invention further includes a power assist device 6〇, the power assist device gorge 62, the reliance wheel and the power assisting component 66, and the power assisting device 60 is installed by the present invention. The following four main operations can be completed. The mode of operation is as follows: a) Power assisted type · Among them, the bicycle rider supplies power and the power assist component 66 provides power; b) Only pedal mode: Among them, only the bicycle is used to supply power; c) Only the power assist mode: among them, the bicycle rider does not talk about providing any power, and all the power is supplied through the power wheel assembly and d) # coasting non-power mode· Wherein the bicycle travels while the pedal assembly is stationary, and the pedal assembly or power assisted drive system does not transmit power. M328416 The motor assembly 62 includes a motor 68 having a power take-off sheave 72 that engages a drive belt 74; in the preferred embodiment, the motor 68 has a motor output such as a 1/2 horsepower power output, and It can run at 4000 RPM and can reach up to 8000 RPM. Alternatively, motor 68 can be an electric motor that is also capable of operating at 4000 RPM or higher. Additionally, the motor 68 can be mounted directly to the bicycle. In a wider range of parks, it can range from 1〇()〇, 1500,2000, 2500, 3000, 3500 or 4000 up to, for example, 4500, 5000, 5500, 6000, 4000, 80〇〇, 9〇〇〇, 1〇,〇〇〇,11,〇〇〇 or i2,〇〇〇RPM范园' _马力明顾 can be 1/2 (or less than 1/2), 3/4, 1·0, 1· 75, 2·0, 2.5, 3·0 horsepower or 13⁄4. Some design options are compatible with certain applications or needs, or are improved with power sources. The reduction gear assembly 64 includes a gear assembly housing 76, a power input member 78, a reduction gear assembly 80, and a power output member 82. The gear assembly housing 76 includes an input end 84' and has an input housing assembly 86. An output end 88 of an output housing assembly 90, the input housing assembly 86 and a wheel housing assembly 9 are coupled to a peripheral portion of the bolt 92, and the housing 76 has a longitudinal central shaft 94. The wheel housing assembly 86 has an end plate 96 having a frustum-conical configuration and a cylindrical peripheral portion extending from the periphery of the end plate 96. *: The output housing assembly 90 includes a dished end plate and a peripheral portion 102 extending rearwardly from the periphery of the end plate 100. The bolt 92 is extended to the peripheral portion 1〇2 via the peripheral portion 98. The placement between the two peripheral portions % and 102 is the upper end of a mounting plate 1〇4, the lower end of which is connected to the curved housing 25, and the screw 92 is extended via the mounting plate 104 to hold it tightly Connected to the gear assembly M328416 housing 76, the mounting plate 70 can be coupled to the mounting plate 104. The power input member 78 includes an input sheave 106 and has a peripheral band and a frustum that bears the groove portion 108. The body tapered body portion HO, the sheave 106 has a threaded central bore 112 and is coupled to a rear wheel end portion 114 of a longitudinally extending input shaft 116 rotatably mounted on a longitudinal axis 94. The rear portion of the input shaft 116 is supported by the rear bearing 17 in the input housing assembly 86, and the rear end of the input shaft 116 has a balance 118, and the front end has a second balance _ object 120, and the input The front end 122 of the shaft 116 is mounted to an end bearing 124. A rear seal 125 is placed between the input shaft 116 and the input housing assembly 86. In the longitudinal central portion of the input shaft 116, a cylindrical centrifugal driving portion 128 having an outer cylindrical surface 130 is used, and the outer cylindrical surface 130 is offset from the cylindrical centrifugally-moving portion 128. The central axis 132 is moved to form concentric circles. When the shaft 116 is rotated, the offset central shaft 132 will operate with the longitudinal central shaft 94. The reduction gear assembly 80 includes a one-piece gear assembly 136 that is mounted to the drive portion 128 through the front and rear bearings 138 and 140 so as to form a concentric circle with the offset central shaft 132. The body gear assembly 136 includes a first rear gear portion 142. And the second forward gear portion 144. The first gear portion 142 is placed in the peripheral fixed ring gear 146 of the peripheral portion 98 of the rear casing assembly 86. The bolt pitch diameter of the first gear portion 142 is moderately smaller than the inner thread pitch diameter of the fixed ring gear 146. As the first gear portion 142 forms a concentric circle with the offset shaft 132, and as the ring gear 146 is engaged with the first gear portion, the gear portion 142 has a rotation with the offset shaft 132 as the shaft 116 rotates with the longitudinal axis 94. The movement also has an orbital motion of the longitudinal axis 94. ' . . . . . . '.. adjacent to and just in front of the fixed ring gear 146, has a rotatable 8 M328416 mounting ring gear 148 mounted in the bearing 150, and its bacteria wound ring gear 148, and A forward cylindrical extension 152 is placed on the fixed ring gear 146. The ring gear 148 has a peripheral seal 154 in the forward direction. The ring wheel 148 placed in this rotatable dress is the forward body wheel portion 144. The outer diameter of the front turn wheel portion 144 is moderately smaller than the inner diameter of the rotatable ring gear 148, so that the first and second gear portions 142 and 144 are fixedly coupled to each other, and the body gear group is provided. The rotation of the rotatable ring gear 148 can be rotated. The diameters of the first and second gear portions 142 and 144, and the inner diameter of the ring gears 146 and 148 are selectable, so the reduction ratio is a large appeal of about 45:1 or 50:1, or a wider view, which can be as low as Similar to 4〇: 1, 35:1, or 3〇: 1, or perhaps lower, perhaps as high as 55:1, 60:1, 65:1, 90:1, 75:1, 80:1, 100: 1, 125: 1, 150: Bu 200: 1, or higher. The wheeling member 82 includes an output housing 156 and has a rear cylindrical portion 157 and is a forwardly extending and fixed connection of the ring gear 148. This cylindrical portion 157 is coupled to the inwardly stepped portion 158 and extends further forwardly to connect to the end plate 16A. The two portions 157 and 158 and the end plate 160 may be integrally formed with each other. There is an output bearing member 162 for mounting the wheel and housing 156 to the forward housing assembly 9''. The inward stepped shell portion 158 supports the front end of the shaft 116 via the bearing 124. The last wheeling member is a wheeled gear 164 and mounted to the output casing 156 such that it is placed around the casing portion 158 and forwardly contacts the casing portion 157. The upper end of the drive chain 168 is coupled to the output key wheel 164' and from It extends downwardly to the splicing of the power assist assembly 66. The forward casing assembly 90 has an aperture adapted to the drive chain 168 so that it can extend through the casing assembly, such as to connect the power assisted wheeling assembly 66. Thus, the existing crankcase 25 is retained, and one of the crankcases 25 is placed. Pedal assembly song M328416 shaft 170. There are left and right crank arms 172 and 174, respectively, and a foot pedal 176 is coupled to each of the crank arms 172 and 174 ends. At the right end of the crankshaft, a wheel axle 178 is mounted with a pedal swayed by the freewheeling clutch 180 and includes an inner clutch member 182 coupled to the axle 178, and an outer clutch member 184, which are coupled by, for example, a 186 display bolt. In addition to the forward sprocket assembly 28, in addition to the configuration of the sinister taxi clutch 180, the two clutch members 182 and 184 will be in a driving relationship when the bicycle rider is motivating to move the bicycle forward. However, the current sprocket assembly 28 is rotating faster than the crankshaft 170 or when the pedal assembly 24 is at rest, the outer clutch member 184 will be free to rotate. ... In order to shift our attention to the power assist assembly 66, there is a second inertial slip-on clutch 188 and a power assist shaft 190 (also referred to as a carrier shaft) having a left end portion to which the clutch 188 is coupled. The power assist shaft 190 has a tubular circumferential cylindrical structure and is concentrically wound around the crankshaft 170. The clutch 188 has an outer clutch portion 192 and has a gear tooth 194 that is coupled to the cantilever chain 168 so that the outer clutch portion 192 functions as the same sprocket 194, and the clutch 188 has an inner clutch member 196. And it is mounted to the left end portion 198 of the shaft 19, the diameter of the end portion 198 being smaller than the diameter of the main portion of the vehicle 190. A bearing member 200 is placed at the left end portion 198 to provide support for the left end of the crankshaft 170. Placed concentrically and fixedly coupled to the left end of the crankcase 25 near the shaft 190 on the right side of the clutch 188 is a adapter member or adapter 204. The member 204 includes an outward radiating extension flange 206 and a latter outwardly extending cylindrical flange 208, and the flanges 206 and 208 engage the mounting plate 104 having a perforation, wherein the mounting plate 104 is mounted To the flange 206, and the surface of the side M328416 of the erection member is referred to as the flange 208. The adapter member 204 also has an inwardly extending cylindrical flange 210 and has external threads that allow it to be threaded into the left end of the crankcase 25. At the right end of the crankcase 25, there is a right adapter member 212 which includes an inwardly extending cylindrical connecting portion 214 and which has external threads that bear against the inner threaded surface portion of the right end portion of the crankcase 25. The adapter member 212 also includes a radiating extension flange portion 216' and is coupled to an outwardly extending cylindrical flange portion 218 in which a bearing member 220 is placed to provide a right end portion that supports the power assist shaft 190. Connected to the right end of the power assist shaft 190, there is a sprocket connecting member 222 including an inwardly extending cylindrical connecting member 224 and having an internal crease to kiss the right end portion of the power assisting shaft 190. The connecting member 222 has an outward stepped portion 226 and is internally formed with an inner bearing member 228 to provide support for the right end portion of the crankshaft 170 and externally to the outer bearing member 220 to provide support for the right end portion of the power assisting shaft 190. The sprocket connecting member 222 further includes a sprocket mounting portion 23〇 having members 232, 234 and 236 that can be fixedly mounted to the sprocket rings 238, 240 and 242. As shown in the fourth figure, when the bicycle rider uses the bicycle to step on the bicycle without any power assistance, the crank arm 172 174 rotates to cause the crankshaft 170 to rotate, and the inner clutch member 182 can refer to the outer clutch member 1 name 4, so the forward direction The sprocket assembly 26 rotates to transfer power to the rear wheel 16. At the same time, the power assist shaft 190 is fixedly coupled to the forward sprocket assembly 26 and rotated at the same speed using the tortuous shaft 170. As the power assist device 6 is stationary, the outer clutch member 192 of the inertial coasting clutch 188 does not rotate, but the inner clutch member 196 is free to rotate. Thus, in the "pre-single pedal" mode of operation, the components of the bearing members 2〇〇'u:: M328416 and 228 are not rotating, and any relative rotation of the clutch members 182 and 184 with the clutch 180 is absent. The components of bearing members 202 and 220 will rotate and the two clutch members 196 and 192 will coast to a reliable coast. In addition, assuming that the bicycle begins to climb up and the rider wants power assisted operation, the motor position will be activated and the lever of motor 62 will Will be placed in a convenient location, such as in the appropriate position of the handlebar. When the speed of the motor 62 is increased, the rotational speed of the output sprocket 164 is also increased; at this time, when the rotational speed of the outer sprocket member 194 is in accordance with the rotational speed of the power assist shaft 190, the clutch members 192 and 196 will drive The power is transmitted from the motor 62 to the power transmission and assist shaft 190 to the forward drive sprocket 26. As such, the knight still pedals and still uses the driving force via the pedal assembly, and the power assist device 60 will provide additional power to maintain the desired bicycle to accelerate uphill. As such, the power assist does not force the pedal crank arm to be forced, which provides a substantial safety factor. In addition, assume that the cyclist has reached the top of the mountain and is traveling on a path or road. If the _ knight feels tired, the knight only needs to stop pedaling. In the present embodiment, the motor assembly 62 will remain operational and power will still be transferred to the power assist shaft 19 〇 tr clutch 188 will operate in the prime mode and clutch 180 will operate in the coasting mode. Therefore, power assist cannot force the pedal crank arm to be actuated, which provides a substantial safety factor. Furthermore, it is assumed that the bicycle is coasting downhill by inertia without any power assistance, and the pedal m is stationary. In this mode of operation, the two clutches and the 188 are coasting by inertia. Furthermore, it should be confirmed that another advantageous feature is that the motor 68 wheel rotation torque is quite very small as the motor 68 is very high _running compared to the output of the reduction gear assembly, thus 12 M328416 thus 'drives the belt 74 The tension is very low. In summary, the power-assisted structure of the bicycle has effectively improved the shortcomings of the conventional structure, and the main technical means of this creation have not been found in any relevant publications. To file an application, the Department of Health is requested to grant the patent right. [Simple description of the diagram] The first diagram is a three-dimensional combination diagram of the creation. The second picture of the storm is a side view of the combination of the creation. The second figure is a schematic cross-section of the reduction gear assembly of the present invention. ...the fourth picture is a schematic sectional view of the creation ❹, [the main component symbol description] bicycle 10 library 12 rear wheel 16 drive assembly 22 pedal assembly 24 curved housing 25 • sprocket assembly 26 forward sprocket assembly 28 drive chain 3(^^^^^^^^^^^^^ sprocket assembly 32 Power assist device 60 Motor assembly 62 Reduction gear assembly 64 Power assist assembly 66 Motor 68 Mounting plate 70 Output pulley 72 Drive belt 74 Gear assembly housing 76 Power input element % 13 M328416 Reduction gear assembly 80 Input 84 Output 88 88 Output housing assembly 90 Longitudinal central shaft 94, peripheral portion 98 Disc end plate 100 • Mounting plate 104 Engagement groove portion 108, threaded central hole 112, rear Input end portion 114 Balance 118 Front end 122 Rear seal 125 Lucent centrifugal drive I28 Bearing 138, 140 First rear gear portion 142 Fixed ring gear 146 Ring gear 148 Peripheral seal 154 Rear cylindrical portion 157 End plate 160 Power take-off element 82 Input housing assembly 86 Screw latch 92 End plate % Peripheral portion 102 Input sheave 106 Tapered body portion 110 Input pumping 116 Rear bearing 117 Second balance 120 Bearing 124 Surface 130 Central shaft 132 Tooth Wheel assembly 130 second forward facing wheel portion 144 bearing 150 forward cylindrical extension 152 output housing 156 inward stepped portion 158 output bearing member 162 14 M328416 output gear 164 pedal assembly crankshaft 170 foot pedal 176 freewheeling clutch 180 external Clutch member 184, power assist shaft 190 sprocket 194 left end portion 198 adapter 204, cylindrical flange 208 right adapter member 212 extension flange portion 216 sprocket connection member 222 outward step portion 226 • sprocket erection Part 23G drive chain 168 left and right crank arms 172, 174 axle 178 internal clutch member 182 freewheeling clutch 188 outer clutch portion 192 inner clutch member 196 bearing member 200 extension flange 206 cylindrical flange 210 cylindrical connection portion 214 Flange portion 218 cylindrical connecting member 224 inner bearing member 228 15