M343639 -八、新型說明： •【新型所屬之技術領域】 本創作係有關一種自行車手自動排槽裝置，尤其是— 種可自動變速之創新型態設計者。 【先前技術】 及運動的最佳 合自行車上路 國人於假日埶 ，且可運動強 許多自行車皆 使用者在騎 速器，以增進 需雙手支撐把 制變速器時， 車結構所存在 變速之創新結 者須努力研發 年從事相關產 ，詳加設計與 且國内 道，因 佳去處 是省錢 變速器 上路且 車上路 整體性 成使用 器材， 的鐵馬 門的最 身，亦 設計了 自行車 騎自行 手而達 容易造 之問題點，如 構，實使用消 突破之目標及 品之製造開發 審慎評估後， 按，自行車乃為國人休閒 不斷於青山綠野開發了許多適 延路風光宜人，更成了近年來 ’再者，自行車不但不耗能源 一族的最佳交通工具選擇，且 以增加自行車的省力性，然而 欲變速時，尚需分心在控制變 的危險性，且使用者騎自行車 之平衡感，若再使用另一手控 者在上路時的不便及困擾者。 是以，針對上述習知自行 何開發一種在騎自行車可自動 費者所殷切企盼，介# Λ β 7止吩，亦係相關業 方向。 有鑑於此，創作人本於多 與設計經驗，針對上述之目標 終得-確具實用性之本創作： M343639 ^【新型内容】 • 即，本創作之主要目的，係在提供 排檔裝置；其所欲解決之問題點，係針 速時所存在之尚需分心在控制變速器， 路的危險性，且使用者騎自行車需雙手 性之平衡感，若再使用另一手控制變速 ，用者在上路時的不便及困擾問題點加以 Φ 而其解決問題之技術特點，主要係 鋼索及變速鋼索分別傳動至變速箱及多 變速箱内部藉由連動桿之動力輸入，再 齒輪組輸出至凸輪，令凸輪之凸端經由 ’再令傳動鋼索掣動變速器之撥桿，進 速至定位段速； 藉此創新獨特設計，使本創作不需 踩踏至預定圈數時該變速器即產生自動 鲁用者不需在騎自行車狀態下再次分心使 •而使本創作自行車達到路上變速的便利 者。 【實施方式】 請參閱第1〜4圖所示，係本創作 裝置之較佳實施例，惟此等實施例僅供 申請上並不受此結構之限制。 首先，如第1圖所示，其係包括一M343639 - VIII. New description: • [New technical field] This creator is about an automatic grooving device for cyclists, especially an innovative type of automatic shifting designer. [Prior Art] and the best combination of sports and bicycles on the road, and the sportsmanship is strong. Many bicycles are used by the riders to enhance the speed change of the car structure. It is necessary to work hard to develop the relevant products for the year of development, and to design and build the domestic road. The best place to go is to save money on the road and the whole road is used as the equipment. The iron horse door is the most modern, and the bicycle is designed to ride by itself. The problems that are easy to make, such as the construction, the actual use of breakthrough targets and the careful development of the manufacturing development of the products, according to the bicycle, for the leisure of the people, the development of many suitable roads in Qingshan Greenfield has become more pleasant, and has become a recent year. In addition, bicycles not only do not consume the best choice of transportation, but also increase the labor saving of bicycles. However, when shifting, there is still a need to be distracted in the danger of control, and the balance of users riding bicycles. If you use another hand controller on the road, the inconvenience and troubles. Therefore, in view of the above-mentioned conventional self-development, one who is eager to pay for the bicycle can be eagerly awaited, and it is also related to the industry. In view of this, the creator has more experience with the design, and has achieved the goal of the above-mentioned purpose - the practicality of the creation: M343639 ^ [new content] • That is, the main purpose of this creation is to provide gearshift devices; The problem to be solved is that there is still a need to distract the control of the transmission and the danger of the road when the needle speed is used, and the user needs to balance the hands with the bicycle. If the other hand is used to control the shifting, the user is used. Inconvenience and troubles in the road, Φ and the technical characteristics of the problem, mainly the steel cable and the shift cable are respectively transmitted to the gearbox and the multi-transmission inside the power input through the linkage rod, and then the gear set is output to the cam. The convex end of the cam is moved to the positioning speed by the lever of the transmission cable, and the innovative and unique design enables the transmission to generate an automatic user without stepping on the predetermined number of turns. It is convenient to distract the bicycle in the state of cycling and to make the bicycle of this creation reach the convenience of shifting on the road. [Embodiment] Please refer to Figs. 1 to 4, which are preferred embodiments of the present invention, but the embodiments are only for the purpose of application and are not limited by the structure. First, as shown in Figure 1, the system includes one
一種自行車手自動 對習知自行車在變 以增進騎自行車上 支撐把手而達整體 器時，容易造成使 改良突破； 藉由自行車之剎車 段變速齒輪組，且 經由不同轉數比之 導桿掣動傳動鋼索 而自動調整鍊條變 自行控制變速，當 變速之效果，且使 用控制變速器，進 性以及行車安全性 自行車手自動排檔 說明之用’在專利 自行車體（^ Q 6 M343639 ，其係於提供人體踩踏之踏板（1 4 )相對ϋ )配置有一變速箱（20)，且該自行車體( 輪、’（17)樞5又有多段變速齒輪組（3〇) 體（1 0 )之連動桿（1 5 )係轉動有一前置 置齒輪藉由鍊條（16)喃合傳動多段變速齒 )，另該自行車體 丄u )之剎車柄（1 1 1 接有驅動鋼索（11)，其中該驅動鋼索（i 设出二條鋼索分別界定為剎車鋼索（i 3 )及 復其中，該剎車鋼索（1 3 )之末端 傳( 1 3 1 )，且變速鋼索（ί 2 )之 傳動於變速箱（2〇) γ 9 η , ；之輸入编（21)内， 使傳動鋼：輸出端（22)穿出-傳動鋼索（ 架=索（18)延伸定位於自行車體（1 上’令傳動鋼索（1 8)之太端西？ 段變速齒輪組（30);其巾）之末知配 ^一變迷箱（20)(:第2圖所示），其 數個不同轉數比之齒輪 -| ς . 、、且且各齒輪傳動係利 之傳輸動力而相互嚙合動作，其中該變 奴數個不同轉數比之#輪組係依序為第 對應嚙合第二齒輪（2 〇 2 )，而第二 )係糟由-傳輸軸（24)相對連樞第三齒 ，且第三齒輪（2 〇 3 )係對應嚙合第四齒 ^於第四齒輪（2 Q 4 )的軸心、係連結樞 ，凸輪（2 5 )外緣則接觸連動有 及導桿（2川，因各第一、二、三、：： -動桿（1 5 1 0 )之後 ，而自行車 齒輪，令前 輪組（3 〇 )係配置連 1 )分別導 變速鋼索（ 係傳動連接 末端係配接 復於變速箱 18)’# 〇 )之橫支 置傳動於多 係内部設有 用連動桿（ 速箱（2 〇 一齒輪（2 齒輪（2 〇 輪（2 〇 3 輪（2 〇 4 轉一凸輪（ 件（2 6 ) 輪（2 〇 1 7 M343639 ’202’2〇3，2〇/i\ 4 ) 相對i -型態，俾使連動桿（Ί =、 τ吳有不同轉數比之齒數 ν丄5 )需轉 圈後方能令凸輪（25)轉 第一齒輪（201)數 之末端係連結有傳動销索（—圈’而該導桿（261) 一圈時其凸輪（25)之仏山8) ’當凸輪（25)轉動 且該導桿 該扣組部 桿（2 6 1 )，以η牛4端係頂推觸動件（2 6 )及導 杯（2 6 1 )以同步撥動傳動鋼 • (261)預定位置設有-扣組部（262 3 )，而導組件（2 則設有導組端（2 7 1 )，當 常態下該導組件（2 7 )之導組端（2 7 1 )係容置定位 • ( 2 6 2 )適處並設有扣組孔（2 ® 7 )對應扣組孔（2 6 2 於扣組部（2 6 2 )之扣組孔（2 6 3 )内，然而導組端 (2 7 1 )另知係错由結合^'彈性體（2 8 )，令彈性體 (2 8 ) —端連接變速鋼索（1 2 )末端，俾當按壓剎車 柄（1 1 1 )時該剎車柄（1 1 1 )所連結之驅動鋼索（ 1 1 )則掣動變速鋼索（1 2 )，以使導組件（2 7 )之 導組端（2 7 1 )脫離扣組部（2 6 2 )之扣組孔（2 6 3 )，俾可藉由鬆拉變速鋼索（1 2 )，以使導組件（2 • 7 )彈性分離扣組導桿（2 6 1 )， • 一多段變速齒輪組（3 0 )(如第3圖所示），其係 具有由高速齒輪（3 2)漸層配置多段至低速齒輪（3 1 )之結構，且多段變速齒輪組（3 0 )底側係設有變速器 (33)，該變速器（3 3 )頂侧則設有撥桿（3 3 1 ) ，且變速器（3 3 )係藉由彈性體（3 3 2 ) ( 2 8 )連 動該撥桿（3 3 1 )，且撥桿（3 3 1 )係對應連動有傳 動鋼索（18)，其中該多段變速齒輪組（3〇)及變速 8 M343639 器（3 3 )及藉由鍊條（1 6 )嚙人細 r -I Q X , ’口連動，俾當傳動鋼索 雙到掣動時，該變速3| ( )卽换叙处 欠疋為（3 3 )之撥桿（3 3丄 撥動鍊條由低速齒輪（3 1 )嚙人# ¥5 ^ r rj 〇 . 合位置撥至高速齒輪 Q d 2 )，又當使用者按壓剎車柄（ 錮会ri〇、 、丄丄丄）時’其變速 、” （1 2 )即拉掣導組件（2 7 )盥 對脫離，令傳動铟会riQ、 、 261)相 W4 傳動鋼索（1 8 )於非掣動狀態變速器（3 3A bicycle cyclist automatically changes the conventional bicycle when it is used to support the handle on the bicycle to reach the integral device, and the improvement is easily broken; the bicycle gear segment is changed by the brake segment, and the guide rod is swayed through different rotation ratios. The transmission cable automatically adjusts the chain to change the self-controlled shifting speed. When the shifting effect is used, and the use of the control transmission, the advancement and the driving safety of the cyclist automatic shifting instructions are used in the patent bicycle body (^ Q 6 M343639, which is provided for the human body) The stepping pedal (1 4 ) is opposite to the ϋ) is equipped with a gearbox (20), and the bicycle body (wheel, '(17) pivot 5 has a multi-speed shift gear set (3 〇) body (10) linkage rod ( 1 5) rotating a front set gear through a chain (16) to drive a multi-stage shifting gear), and the brake body of the bicycle body (1) is connected to a drive cable (11), wherein the drive cable (i) Two steel cables are defined as brake cable (i 3 ) and complex, the end of the brake cable (1 3 ) is transmitted (1 3 1 ), and the transmission cable (ί 2 ) is transmitted to the gearbox (2〇) γ 9 η , In the input code (21), the transmission steel: the output end (22) is worn out - the transmission cable (frame = cable (18) extends and is positioned on the bicycle body (1 on the 'the transmission cable (1 8) The segment gear shifting gear set (30); at the end of the towel, it is known that the gearbox (20) (shown in Figure 2) has several different gear ratios -| ς . Each of the gear trains transmits power and meshes with each other, wherein the variable number of different rotation ratios of the wheel sets is sequentially corresponding to the second gear (2 〇 2 ), and the second is caused by - The transmission shaft (24) is opposite to the third tooth, and the third gear (2 〇3) is corresponding to the axis of the fourth gear (2 Q 4 ), the linkage pivot, and the cam (2 5 ) The outer edge is in contact with the linkage and the guide rod (2 Sichuan, because each of the first, second, third, ::: - moving rod (1 5 1 0), and the bicycle gear, so that the front wheel set (3 〇) is configured ) The cross-supporting cable of the variable-speed cable (the transmission connection end is matched with the transmission 18) '# 〇) is connected to the multi-system internal linkage rod (speed box (2 〇 one gear (2 Wheel (2 〇 wheel (2 〇 3 wheel (2 〇 4 turn a cam (piece (2 6) wheel (2 〇 1 7 M343639 '202'2〇3, 2〇/i\ 4) relative i-type,俾Let the linkage rods (Ί =, τ wu have different number of revolutions than the number of teeth ν 丄 5) need to be rotated to make the cam (25) turn to the end of the first gear (201) with a transmission pin (-ring' When the guide rod (261) is in a circle, the cam (25) is at the top of the mountain 8) 'When the cam (25) rotates and the guide rod of the buckle group rod (2 6 1 ) is pushed by the η 牛 4 end The piece (2 6 ) and the guide cup (2 6 1 ) are used to simultaneously drive the transmission steel. • (261) The predetermined position is provided with a buckle assembly (262 3 ), and the guide assembly (2 is provided with a guide end (2 7 1), when the normal assembly, the guide assembly end (2 7 1 ) of the guide assembly (27) is placed and positioned. ( 2 6 2 ) is suitable and has a buckle group hole (2 ® 7 ) corresponding to the buckle group hole ( 2 6 2 in the buckle group (2 6 2 ) of the buckle group (2 6 2 ), but the guide group end (2 7 1 ) is also known to be a combination of the ^' elastomer (28), so that the elastomer (2 8 ) — The end of the gear cable (1 2 ) is connected to the end, and when the brake lever (1 1 1 ) is pressed, the brake lever (1 1 1 ) The drive cable (1 1 ) of the knot sways the shift cable (1 2 ) so that the guide end (2 7 1 ) of the guide assembly (27) is disengaged from the buckle group of the buckle assembly (2 6 2 ) (2 6 3 ), 俾 can be loosened by the cable (1 2 ) to make the guide assembly (2 • 7) elastically separate the buckle guide (2 6 1 ), • a multi-speed shift gear (30) ( As shown in Fig. 3, it has a structure in which a plurality of stages of a high speed gear (32) are gradually arranged to a low speed gear (3 1 ), and a transmission (33) is attached to the bottom side of the multi-speed shift gear set (30). The top side of the transmission (3 3 ) is provided with a lever (3 3 1 ), and the transmission (3 3 ) is linked by the elastic body (3 3 2 ) (28) to the lever (3 3 1 ). And the lever (3 3 1 ) is correspondingly connected with a transmission cable (18), wherein the multi-speed shift gear set (3〇) and the shifting 8 M343639 (3 3 ) and the chain (16) are pinched by the fine r- IQX, 'mouth linkage, when the transmission cable doubles to the turbulence, the shift 3| ( ) 卽 reverts the yoke to the (3 3 ) lever (3 3 丄 toggle chain by the low speed gear (3 1 )爪人# ¥5 ^ r rj 〇. The position is dialed to the high speed gear Q d 2 ), When the user presses the brake lever (锢 〇, 丄丄丄, 丄丄丄), 'the shifting,' (1 2), that is, the pull guide assembly (2 7 ) is detached, so that the transmission indium will be riQ, 261) W4 transmission cable (1 8 ) in non-swinging transmission (3 3
"=(331)即藉由彈性體（3 32)復位，使撥 干、d 3 1 )撥動鍊條至低速齒輪（3 ^ )位置； 藉由上述之結構、組成設計，玆 又丁絲就本創作之使用作動 情形說明如下： 力 當使用者踩踏踏板（1 4 )轉動該連動桿（i 5 )時 該連動桿（1 5 )之動力源輸入端（2 3 ”M#輸轉動 源至變速箱（2 〇 )内部之各不同轉數比 —、_、 二、四齒輪（201，202, 2〇3, 204)，且第 四齒輪（204)係連動凸輪（25)轉動，而使用者踩 •踏踏板（i 4 )至預定圈數時，該凸·（ 2 5 )即轉動一 圈，令凸輪（25)之凸端撥動導桿（261)以間接擎 •動傳動鋼索（18)，復令傳動鋼索（18)掣動變速器 -(3 3 )之撥桿（3 3 1 )產生撥動狀態，俾使撥桿（3 3 1 )自動撥動鍊條（1 6 )由低速齒輪（3丄）依撥動 -人數撥至向速齒輪（32);當使用者按壓剎車柄（工工 1 )時，其變速鋼索（1 2 )即拉掣導組件（2 7 )與導 桿（261)相對脫離，令傳動鋼索（18)於非掣動狀 態下之撥桿（3 3 i )即藉由彈性體（3 3 2 )復位，使 撥桿（3 3 1 )撥動鍊條由高速齒輪（3 2 )減至低速去 9 M343639 輪（3 1 )位置。 精此，借用$ 不雨自行控制變速，當踩踏至預定圈數 時該變速器（3 ?〜* 圈數 ^ ^ J 3 )即產生自動變速之效果，且使用者不 吊在％自行車狀態下再次分心使用控制變速器（3 3 )， 進而使本創作自行車相路上變速的便利性以及行車安全 請參閱第5、6圖所示，其係本創作之另—實施例， 八中該自行車之坐墊下方預定位置更可設有一避震裝置（ j〇)，所述避震裝置（4〇)分別在支桿設有第二定位 區（41)及第二定位區（43)，並於第一、二 (λ -i 區 4 1 ，4 3 )相對位置設有一彈性片（4 2 )者。 【功效說明】 本創作功效增進之 即，本創作之主要目的 裝置；其所欲解決之問 所存在之尚需分心在控 危險性，且使用者騎自 平衡感，若再使用另一 在上路時的不便及困擾 題之技術特點，主要係 變速鋼索（1 2 )分別 齒輪組（3 〇 )，且變 5)之動力輸入，經由 (25)，令凸輪（2 事實如下： ’係在提供 題點，係針 制變速器， 行車需雙手 手控制變速 問題點加以 藉由自行車 傳動至變速 速箱（2 0 不同轉數比 5 )之凸端 一種自行 對習知自 以增進騎 支撐把手 器時，容 改良突破 之剎車鋼 箱（2 〇 )内部藉 之齒輪組 經由導桿 車手自 行車在 自行車 而達整 易造成 ;而其 索（1 )及多 由連動 輪出$ 動排檔 變速時 上路的 體性之 使用者 解決問 3 )及 段變速桿（1 凸輪 1 )掣 10 M343639 動傳動鋼索（18) ^ / ’再令傳動鋼索（1 8 )掣動變速器 (33)之撥桿q ^1)，進而自動調整鍊條變速；藉 此創新獨特設計，你士 ^ 本創作不需自行控制變速，當踩踏至 預定圈數時該變速器（33)即產生自動變速之放果，且 使用者不需在騎自行車狀態下再次分心使用控制變速器 (33) ’進而使本創作自行車達到路上變速的便利性以 及行車安全性者。 上述實施例所揭示者係藉以具體說明本創作，且文中 雖透過特定的術語進行說明，當不能以此限定本新型創作 之專利範圍；熟悉此項技術領域之人士當可在瞭解本創作 之精神與原則後對其進行變更與修改而達到等效之目的， 而此等變更與修改，皆應涵蓋於如后所述之申請專利範圍 所界定範疇中。"=(331) is reset by the elastic body (3 32), so that the dry, d 3 1 ) toggles the chain to the low speed gear (3 ^ ) position; by the above structure and composition design, The operation of the creation is described as follows: When the user steps on the pedal (1 4 ) to rotate the linkage lever (i 5 ), the power source input end of the linkage lever (1 5 ) (2 3 ” M# transmission rotation source To the different revolution ratios inside the gearbox (2 〇) -, _, two, four gears (201, 202, 2 〇 3, 204), and the fourth gear (204) is linked to the cam (25), and When the user steps on the pedal (i 4 ) to a predetermined number of turns, the convex (25) rotates one turn, and the convex end of the cam (25) pushes the guide rod (261) to indirectly move the transmission cable. (18), the repetitive transmission cable (18) swaying the transmission - (3 3) lever (3 3 1) produces a toggle state, so that the lever (3 3 1 ) automatically toggles the chain (16) The low speed gear (3丄) is dialed to the speeding gear (32); when the user presses the brake lever (worker 1), the shifting cable (1 2 ) is the pulling guide assembly (2 7 ) and Guide rod (261) relative When the transmission cable (18) is in the non-swaying state, the lever (3 3 i ) is reset by the elastic body (3 3 2 ), so that the lever (3 3 1 ) is moved by the chain by the high speed gear (3) 2) Decrease to the low speed and go to the position of 9 M343639 wheel (3 1 ). In this case, borrow the $10 to control the shifting speed without rain. When the pedal is stepped to the predetermined number of turns, the transmission (3 ?~* number of turns ^ ^ J 3 ) is automatically generated. The effect of shifting, and the user does not hang in the % bicycle state, and the control transmission (3 3 ) is distracted again, so that the convenience of shifting the road of the creation bicycle and the driving safety are as shown in Figs. 5 and 6, According to another embodiment of the present invention, a predetermined position below the seat cushion of the bicycle may be provided with a shock absorber (J〇), and the shock absorber (4〇) is respectively provided with a second positioning area in the pole ( 41) and the second positioning area (43), and an elastic piece (4 2 ) is disposed at a relative position of the first and second (λ -i area 4 1 , 4 3 ). [Effective description] The main purpose of the creation of the device; the existence of the problem to be solved needs to be distracted to control the danger, and The user rides the self-balancing feeling. If you use another technical inconvenience and troublesome problems when you are on the road, the main purpose is the transmission of the gear cable (1 2 ), the gear set (3 〇), and the power input of the 5). 25), let the cam (2 facts are as follows: 'Because the point is provided, the needle transmission, the driving needs to control the shifting problem with both hands, and the bicycle is transmitted to the transmission box (20 different revolution ratios 5) When the convex end is a self-contained self-improvement rider, the gearbox of the brake steel box (2 〇) that has been improved by the breakthrough can be caused by the bicycle of the guide rod on the bicycle, and the cable is used. And the user who solves the problem of the body on the road when shifting by the shifting gear 3) and the shift lever (1 cam 1 ) 掣 10 M343639 moving transmission cable (18) ^ / 're-drive cable (1 8) Move the shift lever q ^1) of the transmission (33) to automatically adjust the chain shifting; this innovative and unique design, you do not need to control the shifting by yourself, when the pedal is stepped to the predetermined number of turns (33) Automatic generation If the release speed, and the user does not cycling in state again distracted using the control transmission (33 ') thereby enabling the creation of a bicycle to achieve this shift in the way the convenience and safety of persons driving. The disclosures of the above embodiments are used to specifically explain the present creation, and although the descriptions are made through specific terms, the scope of patents of the novel creation cannot be limited thereby; those skilled in the art can understand the spirit of the creation. Changes and modifications are made to the equivalent of the principles, and such changes and modifications are to be included in the scope defined by the scope of the patent application as described later.
11 M343639 ^【圖式簡單說明】 ，第1圖：係本創作自行車之外觀示意圖，其係顯示該變速 箱及多段變速齒輪之相對位置。 第2圖：係本創作齒輪箱之内部結構示意圖，其係顯示各 不同轉數比之齒輪組與凸輪之相對位置。 第3圖：係本創作多段變速齒輪組之動作示意圖一，其係 . 顯示變速鋼索之未拉動狀態。 第4圖：係本創作多段變速齒輪組之動作示意圖二，其係 t 顯示變速鋼索之拉動狀態。 第5圖：係本創作另一實施例，其係顯示座墊下方設有一 避震裝置。 第6圖··係避震裝置之立體圖。 【主要元件符號說明】 自行車體（1 0 ) 剎車柄（111) 剎車鋼索（1 3 ) 踏板（1 4 ) 鍊條（1 6 ) 傳動鋼索（1 8 ) 變速箱（2 0 ) 輸出端（2 2 ) 第一齒輪（201) 第三齒輪（2 0 3 ) 傳輸軸（2 4 ) 驅動鋼索（1 1 ) 變速鋼索（1 2 ) 剎車部（1 3 1 ) 連動桿（1 5 ) 後輪組（1 7 ) 橫支架（1 9 ) 輸入端（2 1 ) 動力源輸入端（2 3) 第二齒輪（2 0 2 ) 第四齒輪（2 0 4 ) 凸輪（2 5 ) M343639 ’觸動件（2 6 ) 、扣組部（2 6 2 ) 導組件（2 7 ) 彈性體（2 8 ) 多段變速齒輪組（3 0 高速齒輪（3 2 ) .撥桿（3 3 1 ) 避震裝置（4 0 ) ®第二定位區（43) 導桿（2 6 1 ) 扣組孔（2 6 3 ) 導組端（2 7 1 ) ) 低速齒輪（3 1 ) 變速器（3 3 ) 彈性體（3 3 2 ) 第一定位區（4 1 ) 彈性片（4 2 ) 1311 M343639 ^ [Simple description of the diagram], Fig. 1 is a schematic diagram showing the appearance of the bicycle, which shows the relative position of the transmission and the multi-speed shifting gear. Fig. 2 is a schematic view showing the internal structure of the gearbox of the present invention, which shows the relative positions of the gear sets and the cams of different revolution ratios. Fig. 3 is a schematic diagram of the operation of the multi-segment shifting gear set of the present invention, which shows the untensioned state of the shifting cable. Fig. 4 is a schematic diagram 2 of the action of the multi-stage shifting gear set of the present invention, which shows the pulling state of the shifting cable. Fig. 5 is another embodiment of the present invention, which shows that a shock absorber is provided under the seat cushion. Fig. 6 is a perspective view of a shock absorber. [Main component symbol description] Bicycle body (1 0 ) Brake handle (111) Brake cable (1 3 ) Pedal (1 4 ) Chain (1 6 ) Transmission cable (1 8 ) Transmission (2 0 ) Output (2 2 First gear (201) Third gear (2 0 3 ) Transmission shaft (2 4 ) Drive cable (1 1 ) Variable speed cable (1 2 ) Brake (1 3 1 ) Linking rod (1 5 ) Rear wheel set ( 1 7) Horizontal bracket (1 9 ) Input (2 1 ) Power source input (2 3) Second gear (2 0 2 ) Fourth gear (2 0 4 ) Cam (2 5 ) M343639 'Touching member (2 6) , buckle group (2 6 2 ) guide assembly (2 7 ) elastic body (2 8 ) multi-speed shift gear set (3 0 high speed gear (3 2 ). lever (3 3 1 ) shock absorber (4 0 ® second positioning zone (43) guide rod (2 6 1 ) buckle group hole (2 6 3 ) guide group end (2 7 1 )) low speed gear (3 1 ) transmission (3 3 ) elastomer (3 3 2 ) First positioning area (4 1 ) Elastic sheet (4 2 ) 13