I342S51 修正日期：100年2月22曰 九、發明說明： 【發明所屬之技術領域】 本發明應用於腳踏車齒輪組式變速系統，不論後齒輪組變速 系統或前、後都有齒輪組變速系統均可使用，依車速達到自動變 速之效果。該裝置係利用輪框與摩擦輪帶動，藉由車速所產生離 心力再連動裝置’因而依車速選擇最合適之傳動檔位。 【先前技術】 目前市面上最廣泛使用的齒輪組變速系統，係前後齒輪盤組 藉由鏈條帶動。換檔時依變速桿位置拉動變速導線改變變速器位 置，進而換檔無法達到自動變速之效果。 【發明内容】 已知腳踏車自動變速系統：例如V型皮帶盤或行星齒輪組都 需大幅變更腳踏車結構，另外靠電路控制則需繁複的感知元件與 控制電路。本裝置是純機械構造、零件數少成本低廉，而且可直 接加裝在市面上最廣泛使用的變速腳踏車上，不需更動腳踏車的 主體結構設計。 本發明包括在腳踏車前、後變速器裝上回拉彈簧，使起始位 置在扭力最大檔位’由輪圈帶動一個摩擦輪以驅動裝置，請參考 第一圖。再藉由齒輪與配重驅動盤等，傳遞動力到離心力配重以 媒動換檔機構進行換檔。當腳踏車行駛速度加快，自動依據速度 快慢逐步更換檔位。最後，重力配重在上坡路段藉由片狀彈簧束 緊離心力配重的彈簧’使延遲更換檔位以增加上坡所需扭力，但 非競速車輛可不加裝重力配重，請參考第二圖。 本發明的效果使腳踏車能根據行駛速度自動更換檔位，起始 位置在最低速樓位’當腳踏車車速加快，自動依據速度逐步更換 檔位，速度愈快則愈用高速檔。但當車輛停止時又自動回復為最 低迷檔，以利下次起步；且在上坡路段能延遲更換檔位，以增加 s 5 修正曰期：100年2月22曰 上坡時所需扭力。 本發明裝置的運作情形，當腳踏車行駛時，車輪圈帶動摩擦 輪旋轉，摩擦輪再經由齒輪帶動配重驅動盤與離心力配重旋轉， 旋轉時隨時保持至少有一個離心力配重與換檔環接觸。車速愈快 整個系巧轉速也就愈快，離心力愈大帶動離心力配重甩出量也愈 多，壓著換檔環向外推連動換檔控制臂拉動變速導繩連動變速 器，再藉由變速器使腳踏車換檔。車子減速時，離心力變小配重 與換檔環因彈簧拉回，因而降低檔位，請參考第三圖。 本發明中的換檔環卡在外殼導槽中，只能向内或外移動不隨 離心力配重旋轉；換檔環之設計弧度等同於離心力配重飛出最大 距離所形成之圓弧，約等同本裝置外殼之弧度，且頭尾兩端磨平 以減少離心力配重之磨損。換檔控制臂末端有二孔以安裝前、後 ，檔導巧，外側端之換檔導繩控制後變速器、另一換檔導繩控制 月’J變速器使腳踏車換檔；若僅有一組齒輪組變速系統則可省略一 ，換檔，繩。離心力配重回拉彈簧一端固定於離心力配重上，另 端固疋於轴心之孔上；以配合離心力大小控制離心力配重甩出 量。摩擦輪帶動兩個角齒輪改變旋轉方向並傳遞動力，且兩個角 齒輪之齒數比與輪圈直徑有關；例如12、16、2〇、邡吋腳踏車 數比皆不相同。 本f明可再加裝一重力配重同換擋控制臂裝置於下方，回拉 =簧固疋孔改成槽溝向圓心方向延伸；離心力配重回拉彈簧末端 卡入配重驅動盤槽溝後，固定於片狀彈簧上；止制使其只能在 亡坡路段能旋轉，重力配重擁有與地面鋪垂直的力量，在平面 或下坡路段無作用。當腳踏車行經上坡路段，隨坡度因地心引力 ^己重轉動-個角度，經連動機構拉緊片狀彈簧產生束緊作用， 這動作使離心力配重回拉彈簧拉緊，進聽心力配重甩出量 也變小’延遲更換檔位的速度明加上坡時所f扭力，請參考第 期：丨00年2月22曰 【實施方式】 可利用目前最普遍之自行車變速系概裝，如第 統1固定在前又或後車架上，並調整角度使重力配重 : 位置。利用摩擦輪2與車輪框緊密接觸以帶動系統i 兰 變速器裝上回拉彈簧4與後變速器也裝上回拉彈黃5,係扭私則 在最低速檔位。再將前換檔導織18與後換檔導繩$ 中的換播控㈣10上，完成系統的設置。 改裝到裝置 裝置内部構造請參考第二圖，摩擦輪2帶動兩個角 變旋轉方向並傳遞動力，角齒輪6連動配重驅動盤14 =重15，當離心力配重15向外甩出時把換檔環u向外 = 換檔控制臂1G拉動祕料繩18與後換檔導绳19 ^ =連，前變速器20、後換檔導㈣連動後變速器21 檔。重力配重13同換檔控制臂1()裝置於下層， =『坡==力配重13旋轉時以= 端點在束緊魏離心力配重雜科丨7内側 ==移動’但非親迷車輛可不加裝重力配重… 圖係本發明裝置於腳踏車上示意圖。 第=圖係本發明裝置構造分解圖。‘、I342S51 Revision Date: February 22, 2015, Invention: Technical Field of the Invention The present invention is applied to a bicycle gear shifting system, regardless of the rear gear set shifting system or the front and rear gear set shifting systems. It can be used to achieve the effect of automatic shifting according to the speed of the vehicle. The device is driven by the wheel frame and the friction wheel, and the centrifugal force re-linking device is generated by the vehicle speed, thereby selecting the most suitable transmission gear position according to the vehicle speed. [Prior Art] The most widely used gear train shifting system on the market is that the front and rear gear sets are driven by chains. When shifting, the shifting wire is pulled according to the shift lever position to change the transmission position, and the shifting cannot achieve the effect of automatic shifting. SUMMARY OF THE INVENTION It is known that an automatic bicycle shifting system, such as a V-belt or a planetary gear set, requires a large change in the structure of the bicycle, and a circuit control requires complicated sensing elements and control circuits. The device is a purely mechanical structure with a small number of parts and low cost, and can be directly installed on the most widely used shift bicycles on the market, without the need to change the main body structure of the bicycle. The invention includes a pull-back spring mounted on the front and rear of the bicycle to bring the starting position to the maximum torque position. A friction wheel is driven by the wheel to drive the device. Please refer to the first figure. Then, the gear is driven by the gear and the counterweight, and the power is transmitted to the centrifugal force counter to perform shifting by the medium shifting mechanism. When the speed of the bicycle is increased, the gear position is automatically changed according to the speed. Finally, the gravity counterweight in the uphill section is tightened by the spring of the centrifugal force of the sheet spring to make the delay to change the gear position to increase the torque required for the uphill slope, but the non-competitive vehicle may not be equipped with the gravity weight, please refer to the second Figure. The effect of the invention enables the bicycle to automatically change the gear position according to the driving speed, and the starting position is at the lowest speed position. When the bicycle speed is increased, the gear position is automatically changed according to the speed, and the faster the speed, the higher the speed. However, when the vehicle stops, it will automatically return to the lowest speed to facilitate the next start; and the gear can be delayed in the uphill section to increase the s 5 correction period: February 22, 100 years, the required torque when going uphill. In the operation of the device of the present invention, when the bicycle is running, the wheel ring drives the friction wheel to rotate, and the friction wheel drives the counterweight driving disk to rotate with the centrifugal force counter by the gear, and at least one centrifugal force counterweight is in contact with the shift ring at any time during the rotation. . The faster the speed, the faster the speed of the whole system. The greater the centrifugal force, the more the centrifugal force counterweight is pushed out. The shifting ring is pushed outwards and the shifting control arm pulls the shifting guide rope to connect the transmission, and then the transmission. Shift the bicycle. When the car is decelerating, the centrifugal force becomes smaller and the shifting ring is pulled back by the spring, thus lowering the gear position. Please refer to the third figure. The shifting ring of the invention is stuck in the guiding groove of the outer casing, and can only move inward or outward without rotating with the centrifugal force counterweight; the design arc of the shifting ring is equivalent to the circular arc formed by the maximum distance of the centrifugal force counterweight, about It is equivalent to the curvature of the outer casing of the device, and the ends of the head and the tail are flattened to reduce the wear of the centrifugal force counterweight. There are two holes at the end of the shift control arm to install the front and rear, and the gear guide is fine. The shift guide rope at the outer end controls the rear derailleur, and the other shift guide rope controls the month 'J transmission to shift the bicycle; if there is only one set of gears The group shifting system can omit one, shifting, and rope. One end of the centrifugal force counterweight pull-back spring is fixed on the centrifugal force counterweight, and the other end is fixed on the hole of the shaft center; the centrifugal force counterweight is controlled in accordance with the centrifugal force. The friction wheel drives the two angular gears to change the direction of rotation and transmit power, and the gear ratio of the two angular gears is related to the diameter of the rim; for example, the ratio of 12, 16, 2, and 邡吋 bicycles are different. The f-light can be further equipped with a gravity counterweight and the shift control arm device at the lower side, and the pull-back = spring-solid boring hole is changed into a groove groove extending toward the center of the circle; the centrifugal force counterweight pull-back spring end is inserted into the counterweight driving disk slot. After the ditch, it is fixed on the leaf spring; the stop system can only rotate on the dead slope section, and the gravity counterweight has the force perpendicular to the ground pavement, and has no effect on the plane or downhill section. When the bicycle passes the uphill section, the slope is rotated by the angle of gravity according to the gravity of the ground. The tensioning mechanism tensions the leaf spring to produce a tightening action. This action causes the centrifugal force counterweight to pull back the spring to tighten, and the heart rate counterweight is fed. The amount of shots is also reduced. 'The speed of delaying the replacement of the gears plus the torque of the slopes, please refer to the first issue: February 22, 曰 [Embodiment] The most popular bicycle shifting system can be used. For example, the first system is fixed on the front or rear frame, and the angle is adjusted to make the gravity weight: position. The friction wheel 2 is in close contact with the wheel frame to drive the system i blue. The transmission is equipped with a pull-back spring 4 and the rear derailleur is also equipped with a pull-back spring 5, which is at the lowest gear position. Then, the front shifting guide weaving 18 and the rear shifting guide rope $ in the swap control (four) 10, complete the system settings. Refer to the second figure for the internal structure of the device. The friction wheel 2 drives the two angles to change the direction of rotation and transmit the power. The angle gear 6 interlocks the weight drive plate 14 = weight 15. When the centrifugal force weight 15 is pulled out, Shift ring u outward = shift control arm 1G pulls the secret rope 18 and the rear shift guide 19 ^ =, the front derailleur 20, the rear shift guide (4) interlocks the rear transmission 21 gear. Gravity counterweight 13 with shift control arm 1 () device in the lower layer, = "slope == force counterweight 13 rotation when = end point in the tightening Wei centrifugal force counterweight 杂 7 = = = mobile 'but not pro The vehicle can be installed without a gravity weight. The figure is a schematic view of the device of the present invention on a bicycle. Fig. = is an exploded view of the apparatus of the present invention. ‘,
Si ίίϊ明之離心力配重動作示意圖。 圏發明之離心力配重、換檔環與換檔控制臂動作示 【主要元件符號說明】 1、 腳踏車自動變速裝置 2、 摩擦輪 3、 換檔導繩改裝至裝置上 4、 前變速器回拉彈簧 5、 後變速器回拉彈簧 1342851 修正日期：100年2月22曰 6、 角齒輪 7、 外殼 8、 換檔環導槽 9、 止檔片 10、 換檔控制臂 11、 換檔環 12、 片狀彈簧 13、 重力配重 14、 配重驅動盤 15、 離心力配重 16、 外殼蓋 17、 離心力配重回拉彈簧 18、 前換檔導繩 19、 後換檔導繩 20、 前變速器與前齒輪盤組 21、 後變速器與後齒輪盤組Schematic diagram of the centrifugal force counterweight action of Si ίίϊ.圏Invented centrifugal force counterweight, shift ring and shift control arm action indication [main component symbol description] 1. Bicycle automatic transmission 2, friction wheel 3, shift guide rope modified to the device 4, front derailleur pull-back spring 5, rear derailleur pullback spring 1342851 Revision date: February 22, 2005, angular gear 7, housing 8, shift ring guide 9, stop plate 10, shift control arm 11, shift ring 12, piece Spring 13, gravity counterweight 14, counterweight drive disc 15, centrifugal force counter 16, housing cover 17, centrifugal force return spring 18, front shift guide 19, rear shift guide 20, front derailleur and front Gear set 21, rear derailleur and rear gear set