五、新型說明： 【新型所屬之技術領域】 ’特別是有關於一種電 本創作與電動助力自行車有關 動助力自行車之動力輪出機構。 【先前技術】 行車」曰tri:::5177號專利案揭露出-種「電動自 =」Μ要疋在馬達與後_之間絲— 蝴峨接，可】 動力朗速之料料至後職，藉以驅動 "就此專利案之行星齒輪減速機的結構來說，主要具有 仃星支架與—仃星齒輪，其中的行星支架具有複數凸 t、i行星絲财有複㈣孔供料凸㈣設，當行星支 /、义]馬達之驅動而產生偏心轉動時，行星支架之該凸 柱將會分獅頂行星絲之料穿·孔壁，讓行星齒輪 隨之轉動而達到動力輸出的目的。 然而在别述設計中，行星支架之凸柱與行星齒輪之穿 孔之間在運轉的過程中會不斷地產生磨耗，久而久之便會 造成兩者之間的運轉精度變差，進而影響整體結構的正常 運作’同時也會導致使用壽命的縮短。 【新型内容】 本創作之主要目的在於提供一種電動助力自行車之動 力輸出機構’其具有耐磨耗、運轉精度佳，以及使用壽命 長之特色。 M425093 為達成上述目的，本創作之動力輸出機構包含有一心 ^ -威體、-馬達'-傳動齒環，以及一減速單元，該 成體可轉動地套設於該心軸；該馬達設於該殼體内且具有 一轉子’該轉子可轉動地套設於該心軸；該傳動齒環固定 於》亥喊體内，該減速單元具有一減速齒輪與一固定架，該 減速齒輪喷合於該傳動嵩環且與該馬達之轉子之間形成偏 〜連接’使得賴姑輪可綠馬達之驅動而沿著該傳動 齒裒滾動，該固疋架同軸地套設固定於該心軸且與該減速 齒輪之間形成偏心連接，用以限制該減速齒輪的自轉。藉籲 此及減速齒輪便能在無法自轉的狀況下將該馬達的輸出 動力透過與該傳動齒輪的喃合來推動該傳動齒輪轉動，進 而驅動該殼體產生轉動。 由上述可知，本創作之動力輸出機構採用齒輪與齒環 的滚動配δ來達到動力輸出的目的，可確保整體結構具有 良好的運雜度’並且能延長整體結構的使用壽命。 【實施方式】 纽配合圖式列舉以下較佳實施例，用以對本創作之結· 構及功效進行詳細說明。 月先> 閱第圖，為本創作一較佳實施例之電動助力 自盯車之動力輸出機構1G，可使用在電動助力自行車之一 中置馬達或—輪穀馬達’包含有軸20、-殼體30、-馬達40 一傳動齒環50，以及〆減速單元60。 軸20以其兩端固定於電動助力自行車之一車架。 忒體30經由設於心軸20兩端之兩第一軸承32而可轉 4 M425093 【圖式簡單說明】 第一圖為本創作一較佳實施例之剖視圖。 第二至四圖為本創作一較佳實施例之端視剖面圖，主 •要顯示減速齒輪、傳動齒環與殼體之間的作動關係。 【主要元件符號說明】V. New description: [New technology field] ‘Especially related to a power-inducing bicycle with a power-assisted bicycle. [Prior Art] Driving" 曰tri:::5177 Patent Case Revealed - "Electric Self-=" Μ 疋 马达 马达 马达 马达 马达 马达 马达 — — — — — — — — — — — — — — — — — — — — — — — — — — — In order to drive the structure of the planetary gear reducer of this patent case, there are mainly comet brackets and - comet gears, wherein the planet carrier has a complex convex t, i planet wire rich complex (four) hole feeding convex (4) It is assumed that when the eccentric rotation of the planetary support/motor is driven, the convex column of the planetary support will be divided into the wall of the lion-top planetary wire, and the planetary gear will rotate to achieve the power output. purpose. However, in other designs, the between the projections of the planet carrier and the perforations of the planetary gears will continue to wear during the operation. Over time, the running accuracy between the two will be deteriorated, which will affect the normal structure. Operation 'also leads to a shortened service life. [New content] The main purpose of this creation is to provide a power output mechanism for an electric assist bicycle, which has the characteristics of wear resistance, high running precision, and long service life. M425093 In order to achieve the above object, the power output mechanism of the present invention comprises a core, a motor, a gear ring, and a speed reduction unit, the body is rotatably sleeved on the spindle; The casing has a rotor rotatably sleeved on the mandrel; the transmission ring is fixed in the body of the screaming body, the reduction unit has a reduction gear and a fixed frame, and the reduction gear is sprayed Forming a bias-connection between the drive ring and the rotor of the motor, so that the drive of the Laigu wheel can be driven along the drive tooth, and the fixed frame is coaxially sleeved and fixed to the spindle An eccentric connection is formed with the reduction gear to limit the rotation of the reduction gear. By this, the reduction gear can drive the output power of the motor to rotate the transmission gear without being rotated, thereby driving the transmission gear to rotate. It can be seen from the above that the power output mechanism of the present invention uses the rolling δ of the gear and the ring gear to achieve the power output, which ensures the good structure of the overall structure and can extend the service life of the overall structure. [Embodiment] The following preferred embodiments are listed to illustrate the structure and function of the present invention. </ br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> a housing 30, a motor 40, a transmission ring 50, and a deceleration unit 60. The shaft 20 is fixed at its both ends to one of the frames of the electric assist bicycle. The body 30 can be rotated through two first bearings 32 disposed at two ends of the mandrel 20. M425093 [Schematic description of the drawings] The first figure is a cross-sectional view of a preferred embodiment of the present invention. 2 to 4 are end cross-sectional views of a preferred embodiment of the present invention, showing the active relationship between the reduction gear, the transmission ring gear and the housing. [Main component symbol description]
10動力輸出機構 ' 20心軸 30殼體 32第一軸承 40馬達 42定子支架 44定子 46轉子 462偏心軸部 48第二轴承 50傳動齒環 52單向器 60減速單元 62減速齒輪 64固定架 642支臂 66第三軸承 68第四軸承 69第五軸承 70偏心連接件 72第一端 74第二端10 power output mechanism '20 spindle 30 housing 32 first bearing 40 motor 42 stator bracket 44 stator 46 rotor 462 eccentric shaft portion 48 second bearing 50 transmission tooth ring 52 one-way device 60 reduction unit 62 reduction gear 64 fixing frame 642 Arm 66 third bearing 68 fourth bearing 69 fifth bearing 70 eccentric connector 72 first end 74 second end