M419731 五、新型說明： 【新型所屬之技術領域】 本創作係關於變速裝置’尤指一種組裝在自行車上，且 能夠依使用者的騎乘速度，而自動變速的變速裝置。 【先前技術】 隨著環保意識的高漲，人們在進行休閒活動時，愈來愈 強調環保與休閒相結合’因此’騎自行車逐漸成為了熱門的 運動，主要原因在於，自行車能作為人們上下班的代步工具， 使得人們能將通勤時間轉化為運動時間，如此，不僅能節省 使用者的通勤費用，並能避免汽、機車所排放的廢氣污染環 兄最重要的疋’騎自行車屬於一種有氧運動，因此對促進 心肺功能有極佳的效果，除能有效預防慢性病之外，且能達 到控制體重的效果。 承上’隨著自行車的市場逐漸為人重 崎，提供消費= 言，早期的自行變車=置中佔=席之地。舉例而 =，，針對不_的需求:二：： 抗：時導用者需付出較大的踩踏力量對 的方式爬坡，::::==坡有—晕車 設計出變速裝置，以解 有業者在自行車上 踏板會帶動1齒盤，計:°題’―般來說’自行車的腳 u則固盤會透過—鏠條帶動複數個後 »M419731 V. New description: [New technical field] This creation relates to a shifting device, especially a gearbox that is assembled on a bicycle and can automatically shift gears according to the riding speed of the user. [Prior Art] With the rising awareness of environmental protection, people are increasingly emphasizing the combination of environmental protection and leisure when they are engaged in leisure activities. Therefore, cycling has gradually become a popular sport. The main reason is that bicycles can be used as people to commute. The transportation tool enables people to convert commute time into exercise time. In this way, not only can the user's commuting cost be saved, but also the exhaust gas emitted by steam and locomotives can be avoided. The most important thing in the ring is that cycling is an aerobic exercise. Therefore, it has an excellent effect on promoting heart and lung function, in addition to being effective in preventing chronic diseases, and achieving the effect of controlling body weight. As the bicycle market gradually becomes more and more important, it provides consumption = words, early self-changing cars = centered place = place. For example, =, for the demand of not _: two:: resistance: the time guide user needs to pay a large stepping force on the way to climb the slope, ::::== slope has - motion sickness design shifting device to Solving the practitioner's pedal on the bicycle will drive the 1 toothed disc, the meter: ° title - "Generally speaking" the foot of the bicycle u will be through the shackle to drive a number of after »
4 M419731 齒輪，該㈣韻均是組裝於後輪的触上，且彼此間的會 數均不相同，又，同-_，該_驗會帶動—個後齒輪， 如此’若前齒盤的齒數為30齒，後齒輪的齒數為1〇齒，則 當使用者踩動腳踏板一圈時，自行車的後輪 . 藉由改變前齒盤與後齒輪的齒數比例，即 進速度，，纖 的踩踏越費力’但自行車跑得較快，當齒數比例越小時（即4 M419731 gears, the (four) rhyme is assembled on the touch of the rear wheel, and the number of each other is different, and, with the same -_, the _ test will drive a rear gear, so 'if the front sprocket The number of teeth is 30 teeth, and the number of teeth of the rear gear is 1 molar. When the user steps on the pedal, the rear wheel of the bicycle. By changing the ratio of the number of teeth of the front and rear gears, that is, the advance speed, The harder the stepping on the fiber, but the bicycle runs faster, when the proportion of teeth is smaller (ie
位在低檔位），使用者的踩踏越省力，但自行車跑得較慢，令 使用者能触不同的地形與自身騎乘需求，而改變當前自行 車的嵩數比例。In the low gear position, the user's pedaling is more labor-saving, but the bicycle runs slower, allowing the user to touch different terrains and their own riding needs, and change the current ratio of the number of bicycles.
由於使用者在改變自行車的檔位時，通常需撥動或推拉 -變速把錢，才能使鏈條在不_後齒輪上變換位置，以 達到變速效果1而，前述的變速方式，對於新手而言，勢 必需經過-段時間的訓練，才能因應不同的路況，快速地切 換至不同的檔位’又，當使用者在變換自行車的檔位時，由 於鏈條幾枝瞬間掛载至另—後齒輪上，故會造成使用者在 知踏上的不適感，例如：踩踏力突然變重或變輕，令使用者 無法順暢地騎乘自行車，此外，由於自行車在切制不同的 =位，乃是透過鏈條的位移，達到改變前齒盤與後齒輪的齒 數比例，鼠，在制者操作不當㈣況下，容歧鏈條脫 ^自者論細條喊錢錄上，才能恢復騎 ‘上所述可知’目前自行車的變速裝置在使用上仍具有 ”缺失’因此’如何設計出一種機的變速裝置，以能達 5 =更好的使用功效’絲免產生前述問題，即成為本創作在 此亟欲探討之一重要課題。 【新型内容】 ㈣於前述之問題與缺點，創作人乃根據多年實務經驗 及研九，、驗，終於開發設計出本創作之—種自行車之自動變 速裝置’以期藉由本創作，能有效解決前述諸多問題。 、本創作之-目的’係提供一種自行車之自動變速裝置， 以供使用者不需手動改變檔位，便能自動變速，且在變速的 程中不會發生鏈條脫落的問題，該自動變速裳置係組裝 至-自行車的後輪的輪穀上，且透過複數條鏈條分別與複數 個變速齒輪相連接，該等變速齒輪係同軸地樞設在該自行車 的車架上，且其齒數彼此間互不相同，該自動變速裝置包括 -主盤體、至少、一凸輪轴、至少一離心組件、複數個螺合套 環及複數個驅動齒輪環，其中該主盤體之—側面凸設有一中 空柱體’以供該後輪之輪轂能穿過該中空柱體，且被該中空 柱體帶動而旋轉，該中空柱體沿其轴向開設有至少―槽道， 且其周緣分別設有複數個·，各該開孔係與各該槽道相連 通，另，各該凸輪軸係由該主盤體之另一側面分爺插設至各 該槽道中’其周緣係沿各該凸輪軸之軸向分別開对複數個 缺槽，再者，各該離心組件分> 其-端係S]定至各該凸輪軸的—端，其另—端則能往復位 移，以在該主盤體被轉動的狀態下，各該離心組件之一端能 轉動各該凸輪轴’並使得不同位置的各雜合面能依序對應 M419731 各該開Ί，各_合套環係依序.螺合固定至該中空柱 盆由且其上設有-貫穿孔、—第—卡制部及—彈性致動件， 二+中該貫穿聽對應於關孔，該第—卡卿脑動地定位 在料該貫纽之位置，該雜軸件财位在該貫穿孔 且其-端抵靠至該第—卡制部’其另—酬能嵌入Since the user usually needs to toggle or push-pull-shift the money when changing the gear position of the bicycle, the chain can be changed in position on the rear gear to achieve the shifting effect 1, and the aforementioned shifting mode is for the novice. It is necessary to train after a period of time to quickly switch to different gears according to different road conditions. In addition, when the user changes the gear position of the bicycle, the chain is temporarily mounted to the other rear gear. Therefore, the user may feel uncomfortable on the pedal. For example, the pedaling force suddenly becomes heavy or light, so that the user cannot smoothly ride the bicycle. In addition, since the bicycle is cut into different positions, it is transmitted through The displacement of the chain reaches the ratio of the number of teeth of the front sprocket and the rear gear. In the case of improper operation of the manufacturer (4), the faulty chain is removed from the slogan, and the ride can be resumed. At present, the bicycle's shifting device still has a "missing" in use, so how to design a machine's shifting device to achieve 5 = better use of the function of the wire to avoid the aforementioned problems, namely This is an important topic for the creation of this creation. [New content] (4) Based on the above-mentioned problems and shortcomings, the creator has finally developed and designed this type of bicycle based on years of practical experience and research. The automatic transmission device is expected to solve the above problems effectively by this creation. The purpose of this creation is to provide an automatic transmission device for the bicycle, so that the user can automatically shift the gear without manually changing the gear position, and The problem of chain detachment does not occur during the shifting process. The automatic shifting skirt is assembled to the trough of the rear wheel of the bicycle, and is connected to a plurality of shifting gears through a plurality of chain gears, and the shifting gears are coaxial. The grounding device is disposed on the frame of the bicycle, and the number of teeth of the bicycle is different from each other. The automatic transmission device comprises a main disc body, at least one camshaft, at least one centrifugal component, a plurality of screwing collars and a plurality of Driving a gear ring, wherein a main cylinder body has a hollow cylinder formed on a side thereof for the hub of the rear wheel to pass through the hollow cylinder, and the hollow cylinder is Driven and rotated, the hollow cylinder is provided with at least a channel along its axial direction, and a plurality of circumferences are respectively arranged on the circumference thereof, and each of the openings is connected to each of the channels, and each of the camshafts is The other side of the main disc body is inserted into each of the channels. The peripheral edge thereof is respectively opened to the plurality of missing slots along the axial direction of each of the camshafts. Further, each of the centrifugal components is divided into its own end. The system S is fixed to the end of each of the camshafts, and the other end thereof is reciprocally displaceable, so that one end of each of the centrifugal assemblies can rotate each of the camshafts in a state in which the main disk body is rotated Each of the hybrid surfaces of the position can sequentially correspond to the opening of the M419731, and each of the ring-shaped rings is sequentially screwed and fixed to the hollow cylindrical basin and has a through-hole, a first-shaped portion and - an elastic actuating member, the second + the middle of the listening corresponds to the closing hole, the first - card is positioned in the position of the button, the miscellaneous member is in the through hole and its end is abutted To the first - the Ministry of Cards'
歸至該凸輪軸的外緣，各該驅動齒輪環分別活 =套合至各闕合套環，且分概過對應之鏈條而與各該 文速齒輪減接，各該鶴齒輪__分舰有複數 2制部，在各卿性致動件之另—軌靠凸輪轴之外 =時^解性致動件的推抵，各該第—卡制部分別與各該 第一卡制部減卡，進而使各該驅動齒輪環 螺Returning to the outer edge of the camshaft, each of the driving gear rings is respectively slidably engaged with each of the twisting collars, and is divided by the corresponding chain to be reduced with each of the speed gears, and each of the crane gears is divided into __ The ship has a plurality of 2 parts, and the triggering actuating members are pushed out when the other rail-shaped actuating members are outside the rail camshaft, and each of the first-carding portions and the first card is respectively Reduce the card, and then make each of the drive gear ring snails
合套環；反之，在各該彈性致動件之另1嵌人至_= 槽時，因彈性致動件的釋放，各該第—卡卿脫離各該第」 卡制部’ _使各該稿錄自轉而無法帶動對應之 螺合套環。如此’當制者在騎乘自行車時，隨著使用者 踩踏速度，便能使雜心組件之另—魅生往復位移， 進而使得各該鶴錄聲動對紅螺合套環，或獨自 而無法動對應之螺合套環，以達到變速效果。 為便貴審查委員能對本創作目的、技術特徵狀功效， 做更進-步之認識婦解，轉實關配合圖式，詳細說明 如下： 【實施方式】 本創作係-種自行車之自動變速裝置，在本創作之—較 7 月參閱第1圖所示，該自動變速裝置1係組裝 二2之後輪21的輪轂211上，且透過複數條鏈條23 m變速齒輪25相連接，該等變速齒輪25係同軸 =設在^行車2 π上，且赫數彼此間互不相 5，又’轉閱第2及3圖所示，該自動變速裝置1包括-主盤體U、-至少-凸輪轴13、至少—離心組件15、複數個 螺合套環17及複數_麵輪㈣，又，為避免圖式中元件 過小，影響了細部特徵的表現，第2财僅繪製-個螺合套 壞17及-個驅動齒輪環19，另，由於战軸13、離心組件 ^ ”相關元件的數$，乃是相觀，骑用—致，故為方便 說明，後敘均以單-數量進行描述，合先陳明。該主盤體^ 之一侧面的中央位置凸設有一十空柱體ln，該中空柱體iu 的中央位置対—軸孔11Q，該後輪21之輪轂211能穿過該 中工柱體111之轴孔110,並被固定至該中空柱體ιη，如此， 當該中空柱體111旋轉時，便能帶動該輪轂211旋轉，而致 使後輪21轉動。 承上，復請參閱第2圖所示，該中空柱體111沿其軸向 開設有至少一槽道H3，且其外側周緣設有複數個開孔115， 該等開孔115係與該槽道113相連通，另，該凸輪軸13係由 該主盤體11之另一側面插設至該槽道113中（如第3圖所 示）’其周緣係沿該凸輪軸13之軸向分別開設有複數個缺槽 130 ’各該缺槽ι3〇係朝該凸輪軸13的徑向凹設，且在其底 部形成一契合面132,任二相鄰之契合面132間分別形成一夾 角’在該凸輪軸13被轉動的狀態下，各該契合面132能分別 M419731 應於各個開孔115，但在同—時間下，至多二個相鄰的契合 =一 132不會與各該開孔115相對應，再者，復請參閱第3圖 —不’該離心組件15係拖設至該主盤體11的另-侧面，其 端係固疋至該凸輪轴13的一端，其另一端則能在該主盤體 ^之周緣與巾讀置間往復位移，在該主盤體11被轉動的狀 、'下該離〜組件15之另一端會位移至鄰近該主盤體u的 周，位置，此時’該離心組件15之一端會轉動該凸輪轴η， • 使佧該凸輪軸13上不同位置的各該契合面132能依序對應至 5開孔115為月匕詳細揭露出本創作之離心組件15的結 構’後敘僅j本創作之一個實施態樣，進行說明，惟，熟悉 該項域之技蟄人士，當能在掌握本創作之整體技術特徵後， 針對離心組件15的結構進行變化，合先敘明。 復請參閱第3圖所示，該離心組件15包括-主桿體151、 -第-連接桿153、一第二連接桿155與一彈菁职，其中該 主桿體151略呈L狀，其中間區段樞設在該主盤體！i 1，其 • —端係與該第一連接桿153之一端相抱接，又，該第一連接 桿153之另一端係與該第二連接桿155之一端相樞接，該第 二連接桿155之另-端則與該凸輪軸13相連接，該彈菁⑸ 之兩端分賴定至該主桿體151與域體u上，並對主桿體 151之另-端施加一向主盤體u中央位置位移的作用力，如 此’當該主健u _時，由祕心力㈣響，社桿體i5i 之另-端便會自動朝該主盤體n的周緣位移，同時，該主桿 體151即^動該第-連接桿153,使得第一連接桿15=帶動 第二連接桿155，進而迫使該凸輪軸13轉動，騎，當該主盤 9 M419731 體li停止旋轉，或旋轉速度變慢時，受到該彈簧157之作用 力影響，該主桿體151的另一端即會朝主盤體I〗的中央位置 位移，同時，該凸輪軸13亦會反向轉動。另，為能提高該離 心組件15的效果，業者能在該主桿體15〗的另一端，加裝一 重力塊1511，使得該主桿體151的另一端能快速地位移至鄰 近主盤體11的周緣位置，再者，當該主盤體12上設有複數 個離心組件15時，任二相鄰之離心組件丨5間，能增設一連 動桿159，該連動桿159的兩端分別連接一離心組件15之主 桿體151的另-端及另-離心組件15之主桿體151的一端， 以確保該等離心組件15能作動正確，且使各個四輪轴13的 旋轉幅度近似。 又，請參閱第2及4圖所示，各該螺合套環17係依序螺 合固定至該中空柱體11卜且其上設有一貫穿孔171、一第一 卡制部Π3及-彈性致動件175，其中該貫f孔m係對解 該開孔115 ’該第一卡制部173係為一片體，其一端能活動地 定位在鄰賴貫纽171之位置，且其上較巾_部位則 對應於該貫穿孔Π1，轉錄動件175定位在該貫穿孔⑺ 内，且其-端係抵靠至該第—卡制部173，其另—端則嵌入至 對應之該缺槽130 (如第4 _示之狀態）或抵靠至對應之該 凸輪軸13的外緣（如第5圖所示之狀態），在該實施例中， 該彈性致動件175包括—球體咖與-彈性件1753,其中該 求，1751位在該貝穿孔171的底部，並能嵌人至缺槽⑽或 輪轴13的外緣，該彈性件1753之一端能抵靠該第 制部m ’其另—端敝裝·球體1751，以能隨著該 M419731 球體1751的位置改變（如第4 卡制部Π3。. ^5_#而推抵該第- 復請參閱第卜2及4圖所示，各伽動 w 活動地套合至各該螺合_17日t ^齒輪環19分別 而與各該變速編相連接，該驅動_ 制部191’在該彈性致動件175 = 雜致勤件175之κ即彈性件 謂侧-卡制部173账卡制卡制 ^螺口套％ π轉動，反之，在該彈性致動件175之另 入至該缺槽⑽時’該彈性致動件175之一端會 一卡制部173，使得第一卡制部173脫離第二卡制部⑼1 而使各該驅動齒輪環19獨自空轉而無法帶動對庫 ;7 ’如此，雖然本創作之自動變逮裝置1，係透過復數二； =Q數嶋細娜，鳩麵機抽^ 二频:_175的構造，便能避免所有的螺合套 復明參閱第卜2及3圖所示，當使用者在騎乘自行車2 2該自行車2之前齒盤29能_時帶動該等變速齒輪25 :隨讀財的踩踏速度增加或減緩，便能夠迫使該離 15之另—端產生往復位移，同時，帶動該凸輪轴13 2 ’由於該凸輪㈣在自轉時，其上駿合續會依序 ’《或離開各該開孔115，使得各該驅動齒輪環⑺能帶動對 11 M419731 應之螺合套環Π，絲自空轉而無法帶動對應之螺合套環 17如此一來’隨著使用者的踩踏速度變化，當前帶動後輪 21之驅動歯輪環19與變速齒輪25間的齒數比例，便會自動 改變’進而翻魏效杲，令使用者不需在手動改變自行車2 的檔位’大幅提高使用者的便利性。又，由於本創作的變速 過程中，並不需改變鏈條23的位置，因此，不會發生鏈條23 脫洛的問題’而能增加使用者在騎乘上的安全性，另，在凸 輪軸13轉動的過程中’由於至多二個相鄰的契合面丨不會 與各該開孔115相對應，意即，在由一個被帶動的螺合套環 17 ’更換為另一個被帶動的螺合套環17時，前述之兩個被帶 動的螺合套環17，會同時帶動後輪21，嗣，在由另—個被帶 動的螺合套環17帶動後輪21，因此，在自行車2進行變速的 過程中，使用者並骑_感受到踩踏力突錢重或變輕的 感覺’而能提供制者-個胁的使用經驗。 —在此特別一提者，復請參閱第丨圖所示，本創作之前述 貝％例中，雖然變速齒輪25是額外設置於自動變速裝置i與 前齒盤29之間’但在本創作之其它實施例中，業者能依生產 上或設計上的需求，而將變速齒輪25與前齒盤29整合為一 體，以提高本創作之產業_性。按，以上所述，僅係本創 作之較佳貫關’惟’本創作所主張之權利範圍並不偈限 於此’按凡熟悉該項人士，依據本創作所揭露之技術内 容’可輕易思及之化’均闕不麟本創作之保護範 疇。 12 M419731 【圖式簡單說明】 第1圖係本創作之組裝示意圖； 第2圖係本創作之爆炸示意圖； 第3圖係本創作之主盤體與離心組件示意圖； 第4圖係本創作之螺合套環與驅動齒輪環之一狀態圖；及 第5圖係本創作之螺合套環與驅動齒輪環之另一狀態圖。 【主要元件符號說明】 自動變速裝置 …… 1 主盤體 …… 11 軸孔 …… 110 中空柱體 …… 111 槽道 …… 113 開孔 …… 115 凸輪轴 …… 13 缺槽 …… 130 契合面 ...... 132 離心組件 ...... 15 主桿體 …… 151 重力塊 …… 1511 第一連接桿 …… 153 第二連接桿 …… 155 彈簧 …… 157 連動桿 …… 159 13 M419731 螺合套環 ...... 17 貫穿孔 …… 171 第一卡制部 …… Π3 彈性致動件 ...... 175 球體 ...... 1751 彈性件 ...... 1753 驅動齒輪環 …… 19 第二卡制部 …… 191 自行車 …… 2 後輪 ...... 21 輪轂 211 鏈條 …… 23 變速齒輪 …… 25 車架 …… 27 前齒盤 ...... 29 14a collar; conversely, when the other one of the elastic actuators is inlaid into the _= slot, each of the first card members is separated from each of the first card portions by the release of the elastic actuators. The manuscript is rotated and cannot be used to drive the corresponding screw collar. In this way, when the rider is riding a bicycle, as the user steps on the speed, the other components of the miscellaneous components can be reciprocally displaced, thereby causing each of the cranes to move to the red screw collar, or alone. The corresponding screw collar cannot be moved to achieve the shifting effect. In order to facilitate the examination of the purpose of this creation, the technical characteristics of the function, to make a more step-by-step understanding of women's solution, to turn the actual cooperation with the schema, as follows: [Embodiment] This creation is a kind of bicycle automatic transmission In the present invention, as shown in Fig. 1 in July, the automatic transmission 1 is assembled on the hub 211 of the rear wheel 21 of the second and second stages, and is connected through a plurality of chain 23 m shifting gears 25, which are connected. 25 series coaxial = set on the car 2 π, and the Her numbers are not in phase with each other 5, and 'turned to the second and third figures, the automatic transmission 1 includes - the main body U, - at least - cam The shaft 13, at least the centrifugal assembly 15, the plurality of screwing collars 17, and the plurality of slewing rings (four), in order to avoid the components in the drawing being too small, affecting the performance of the detailed features, the second fiscal only draws a screw sleeve Bad 17 and - drive gear ring 19, in addition, because the number of the relevant components of the battle shaft 13, the centrifugal assembly ^ ", is a relative, riding, so for the convenience of description, the latter is a single-quantity Description, the first Chen Ming. The central position of one side of the main body ^ is convex with a ten-space The body ln, the central position of the hollow cylinder iu is a shaft hole 11Q, and the hub 211 of the rear wheel 21 can pass through the shaft hole 110 of the middle cylinder 111 and is fixed to the hollow cylinder, i. When the hollow cylinder 111 rotates, the hub 211 can be rotated to cause the rear wheel 21 to rotate. As shown in FIG. 2, the hollow cylinder 111 has at least one slot along its axial direction. a plurality of openings 115 are formed in the outer periphery of the track H3, the openings 115 are in communication with the channel 113, and the cam shaft 13 is inserted into the other side of the main disk body 11 In the channel 113 (as shown in FIG. 3), the periphery thereof is respectively provided with a plurality of notches 130 in the axial direction of the cam shaft 13, and each of the notches ι3 is recessed toward the radial direction of the cam shaft 13. And forming a matching surface 132 at the bottom thereof, and forming an angle between each of the adjacent engaging surfaces 132. In the state in which the cam shaft 13 is rotated, each of the engaging surfaces 132 can be respectively M419731 applied to each opening 115. However, at the same time, at most two adjacent fits = one 132 will not correspond to each of the openings 115, and again, the reference Referring to Figure 3 - no, the centrifugal assembly 15 is dragged to the other side of the main disc body 11, the end of which is fixed to one end of the cam shaft 13, and the other end of which is capable of being in the main disc body. The reciprocating displacement between the peripheral edge and the towel reading device, in the shape in which the main disk body 11 is rotated, the other end of the lower portion of the assembly 15 is displaced to a position adjacent to the circumference of the main disk body u, at this time, the centrifugal assembly One end of the 15 rotates the camshaft η, • the respective engaging faces 132 at different positions on the camshaft 13 can be sequentially corresponding to the 5 openings 115 to reveal the structure of the centrifugal assembly 15 of the present invention in detail. After the narrative, only one implementation of this creation is described, but the technical person familiar with the domain can change the structure of the centrifugal component 15 after mastering the overall technical characteristics of the creation. Bright. Referring to FIG. 3, the centrifugal assembly 15 includes a main rod body 151, a first connecting rod 153, a second connecting rod 155 and a resilient body, wherein the main rod body 151 is slightly L-shaped. The middle section is pivoted on the main disc body! The first end of the first connecting rod 153 is pivotally connected to one end of the second connecting rod 155, and the second end is pivotally connected to one end of the second connecting rod 155. The second connection is The other end of the rod 155 is connected to the cam shaft 13, and the two ends of the elastic crystal (5) are respectively disposed on the main rod body 151 and the domain body u, and a main body is applied to the other end of the main rod body 151. The force of the displacement of the central position of the disk u, so that when the main health u _, the secret force (four) rings, the other end of the social body i5i will automatically shift toward the periphery of the main disk n, and at the same time, The main rod body 151 moves the first connecting rod 153 such that the first connecting rod 15=drives the second connecting rod 155, thereby forcing the cam shaft 13 to rotate, riding, when the main disc 9 M419731 body li stops rotating, or When the rotational speed is slow, the other end of the main rod body 151 is displaced toward the central position of the main disc body I by the force of the spring 157, and the cam shaft 13 also rotates in the opposite direction. In addition, in order to improve the effect of the centrifugal assembly 15, the operator can add a gravity block 1511 at the other end of the main rod body 15 so that the other end of the main rod body 151 can be quickly displaced to the adjacent main disc body. The peripheral position of 11 is further provided. When a plurality of centrifugal assemblies 15 are disposed on the main disc body 12, any two adjacent centrifugal assemblies 丨5 can be added with a linkage rod 159, and the two ends of the linkage rod 159 are respectively The other end of the main rod body 151 of the centrifugal assembly 15 and one end of the main rod body 151 of the other-centrifugal assembly 15 are connected to ensure that the centrifugal assemblies 15 can be actuated correctly, and the rotation amplitude of each of the four axles 13 is approximated. . Moreover, as shown in FIGS. 2 and 4, each of the screwing collars 17 is screwed and fixed to the hollow cylinder 11 in this order, and is provided with a permanent through hole 171, a first locking portion Π3, and The elastic actuator 175, wherein the through hole m is a pair of the opening 115'. The first locking portion 173 is a piece, and one end thereof is movably positioned at a position adjacent to the opening 171, and the upper portion thereof is movable The nip portion corresponds to the through hole Π1, and the transcript member 175 is positioned in the through hole (7), and the end portion thereof abuts against the first locking portion 173, and the other end is embedded in the corresponding one. The slot 130 (as in the state of FIG. 4) or the corresponding outer edge of the camshaft 13 (as shown in FIG. 5), in this embodiment, the resilient actuator 175 includes - The ball body and the elastic member 1753, wherein the 1751 position is at the bottom of the shell perforation 171, and can be embedded into the outer edge of the notch (10) or the axle 13, and one end of the elastic member 1753 can abut the first system Part m 'the other end of the armored ball 1751, in order to change with the position of the M419731 sphere 1751 (such as the fourth carding part Π3.. ^5_# and push the first - see please see the second In the figure 4, each gamma w is movably fitted to each of the screwing _17-day t^gear rings 19, respectively, and is coupled to each of the shifting gears, and the driving mechanism 191' is at the elastic actuating member 175. = κ of the messenger 175, that is, the elastic member, the side - the card portion 173, the card card system, the screw sleeve, the π rotation, and vice versa, when the elastic actuator 175 is further inserted into the slot (10) One end of the elastic actuator 175 will have a locking portion 173, so that the first locking portion 173 is disengaged from the second clamping portion (9) 1 so that each of the driving gear rings 19 is idling alone and cannot drive the library; 7 'So, although The automatic variable arresting device 1 of the present invention passes through the plural two; =Q number 嶋 娜 鸠, 鸠 机 machine pumping ^ two frequency: _175 structure, can avoid all the screw sleeve recovery see paragraphs 2 and 3 As shown, when the user can drive the shifting gear 25 before the bicycle 2 can ride the bicycle 2: the pedaling speed of the reading can be increased or slowed down, and the other end of the 15 can be forced to be generated. Reciprocating displacement, at the same time, driving the camshaft 13 2 'because the cam (four) is rotating, its upper end will continue in sequence ' or leave each opening 1 15, so that each of the driving gear ring (7) can drive the screw ring of the 11 M419731, the wire is idling and cannot drive the corresponding screwing collar 17 so as to follow the user's pedaling speed change, currently driven The ratio of the number of teeth between the driving wheel ring 19 and the shifting gear 25 of the rear wheel 21 will automatically change 'and thus the effect of turning the wheel, so that the user does not need to manually change the gear position of the bicycle 2' to greatly improve the user's convenience. Since the position of the chain 23 does not need to be changed during the shifting process of the present creation, the problem of the detachment of the chain 23 does not occur, and the safety of the rider can be increased, and the camshaft 13 is rotated. In the process of 'because at most two adjacent mating faces 丨 do not correspond to each of the openings 115, that is, in the case of being replaced by a driven screw collar 17' to another driven screw sleeve At the time of the ring 17, the aforementioned two driven screw collars 17 will simultaneously drive the rear wheel 21, and the rear wheel 21 will be driven by the other driven screw collar 17, and therefore, on the bicycle 2. In the process of shifting, the user rides It is a feeling of being used by a maker or a threat. - In particular, as shown in the figure, in the above-mentioned example of the present invention, although the shifting gear 25 is additionally disposed between the automatic shifting device i and the front toothed disc 29, In other embodiments, the shifting gear 25 and the front sprocket 29 can be integrated into one another in accordance with production or design requirements to enhance the industry of the present invention. According to the above, it is only the best of this creation. The scope of the rights claimed by this creation is not limited to this. 'Being familiar with the person, according to the technical content disclosed in this creation' can be easily thought And the 'schemes' are not protected by the creation of this book. 12 M419731 [Simple description of the diagram] Figure 1 is a schematic diagram of the assembly of the creation; Figure 2 is a schematic diagram of the explosion of the creation; Figure 3 is a schematic diagram of the main body and the centrifugal assembly of the creation; Figure 4 is the creation of the creation A state diagram of the screw collar and the drive gear ring; and Fig. 5 is another state diagram of the screw collar and the drive gear ring of the present invention. [Main component symbol description] Automatic transmission... 1 Main disc body... 11 Shaft hole... 110 Hollow cylinder... 111 Channel... 113 Opening... 115 Camshaft... 13 Missing slot... 130 Fit Face... 132 Centrifugal Assembly... 15 Main Rod Body... 151 Gravity Block... 1511 First Connecting Rod... 153 Second Connecting Rod... 155 Spring... 157 Linking Rod... 159 13 M419731 Threaded ferrule... 17 Through hole... 171 First clamping part... Π3 Elastic actuator... 175 Sphere... 1751 Elastic part: .... 1753 drive gear ring... 19 second card... 191 bike... 2 rear wheel... 21 hub 211 chain... 23 shifting gear... 25 frame... 27 front teeth Disk... 29 14